Metroline Associates

Headset Style	Over Ear
SPL (at kHz Vrms)	@ 1 kHz
Dimensions Height x Width x Depth	595 mm*380 mm*230 mm
PC Cable Length	USB cable length: 1.2 m (from call control unit to USB plug)
Microphone Type	Bi- Directional

Yealink UH38 is a premium stereo USB headset featuring phenomenal call and music audio. Dual-microphone noise cancellation and Acoustic Shield Technology provide you with a superior call experience. UH38 supports USB and Bluetooth dual connections, allowing you to manage two call devices simultaneously to improve call processing efficiency. Premium materials and a sturdy metal frame make it textured and durable. Soft and skin-friendly headband&ear cushions make the headset all-day comfortable. UH38 is the headset that gives you the best focus and collaboration to improve your productivity to a new level, whether you’re in the office or working remotely at home. It works seamlessly with major UC platforms and integrates natively with Yealink IP phones

Headset Type	Over Ear
Connection Type	USB-C
Audio Channel	Stereo
Design	Over-Ear
Speaker Configuration	Stereo
Microphone Type	omni-directional
Dimensions Height x Width x Depth	Package dimensions: 7.48 x 8.26 x 2.16 in
PC Cable Length	3.81 ft (inline module to headset); 3.08 ft (USB to inline module); 7.12 ft (total USB to headset)
Brand	Poly
Mobile Cable Length	3.81 ft (inline module to headset); 3.08 ft (USB to inline module); 7.12 ft (total USB to headset)
Wearing Style	On-Ear

Professional Wired Headset with USB-C, USB-A Adapter & 3.5mm Connectivity

The Poly Blackwire 5220 USB-C Headset is a premium, dual-ear, wired UC headset designed for professionals who need exceptional audio quality, long-wearing comfort, and flexibility across devices. With USB-C, USB-A (via adapter), and a 3.5mm audio jack, this headset seamlessly connects to modern laptops, tablets, and mobile devices, making it ideal for hybrid work, office communication, video conferencing, and multimedia use.

Engineered with professional-grade audio drivers, noise-canceling microphone, and SoundGuard Digital acoustic protection, the Blackwire 5220 delivers crystal-clear voice transmission and rich stereo sound. Its ergonomic design features soft leatherette cushions, a cushioned metal headband, and an adjustable boom, ensuring comfort during long calls, webinars, or training sessions. Inline controls make call management easy with dedicated buttons for mute, volume, and call handling.

Certified for Zoom, Google Meet, and Works With Chromebook, and compatible with Microsoft Teams, Webex, and all major UC platforms, the Blackwire 5220 is optimized for business communication. IT teams can manage, monitor, and customize settings via Poly Lens, ensuring consistent deployment across the organization.

Key Features & Benefits High-Definition Stereo Audio

• Premium 28 mm speakers deliver warm, balanced sound for calls and media.

• Wideband audio and DSP enhance voice clarity.

• Dynamic EQ automatically adjusts for voice, music, and multimedia.

Noise-Canceling Microphone

• Cuts background noise for clearer conversations.

• Optimized for busy offices and hybrid workspaces.

Multiple Connectivity Options

• Wired USB-C for modern laptops and Type-C devices.

• USB-A adapter included for legacy systems.

• 3.5mm jack for mobiles and tablets.

• Perfect for BYOD environments.

Superior Comfort & Build

• Soft leatherette ear cushions.

• Lightweight, cushioned metal headband.

• Adjustable, flexible boom for perfect mic placement.

• Folds flat into the included carrying case for easy portability.

Simplified Call Control

• Inline module with answer/end, mute, and volume controls.

• LED indicators for quick status visibility.

Enterprise-Ready & Certified

• Certified for Zoom, Google Meet, and Chromebook.

• Works seamlessly with Teams, Webex, Cisco Jabber, Avaya, and more.

• Manageable via Poly Lens for device insights and updates.

Technical Specifications Audio

• Speaker bandwidth: 20 Hz to 20 kHz

• Microphone bandwidth: 100 Hz to 10 kHz

• Noise-canceling microphone

• SoundGuard Digital acoustic protection

• Speaker size: 28 mm

• SNR: >24 dB

Connectivity

• Wired USB-C

• USB-C to USB-A adapter

• 3.5mm audio plug

• Cable length: 7.12 ft total

Compatibility

• Windows 10/11, macOS, Android, iOS

• UC platforms: Zoom, Google Meet, Teams, Webex, Avaya, Cisco

Accessories Included

• Headset

• USB-C to USB-A adapter

• Carrying case

• Quick start guide

Warranty

• Two-year Poly standard limited warranty

Connection Type	USB-C
Headset Type	Over Ear
Audio Channel	Stereo
Design	Over-Ear
Speaker Configuration	Stereo
Microphone Type	omni-directional
SPL (at kHz Vrms)	Speaker bandwidth: 200 Hz to 6.8 kHZ (speech mode); 20Hz to 20 kHZ (media mode)
Dimensions Height x Width x Depth	Product dimensions: 6.1 x 1.25 x 7.1 in
PC Cable Length	2.59 ft (inline module to headset); 2.95 ft (USB to inline module); 5.28 ft (total USB to headset)
Wearing Style	On-Ear

Professional Wired Stereo Headset for Clear Calls, Meetings & Multimedia

The Poly Blackwire 3220 USB-C Headset is a high-quality, enterprise-ready stereo headset designed for professionals who need reliable audio performance for calls, meetings, virtual collaboration, and multimedia use. With a comfortable on-ear stereo design, wideband audio, a noise-canceling microphone, and multiple connectivity options, the Blackwire 3220 delivers clear communication and all-day comfort in both office and remote work environments.

This model includes a USB-C connector with a tethered USB-A adapter, ensuring compatibility with modern laptops, legacy systems, tablets, and ChromeOS devices. Built for durability with a lightweight metal headband and soft foam ear cushions, it balances comfort and strength for extended daily use. The intuitive inline controls allow users to manage calls effortlessly, making it ideal for customer support teams, hybrid workers, educators, and corporate professionals.

Key Features & Benefits High-Quality Poly Audio

The headset offers PC wideband audio, dynamic EQ, and digital signal processing, resulting in natural, clear voice quality and optimized audio performance for calls and media. Dynamic EQ automatically adjusts sound profiles for voice, music, and video content.

Noise-Canceling Microphone

The built-in noise-canceling microphone ensures your voice stays clear by reducing surrounding noise—ideal for open offices, shared workspaces, and work-from-home environments.

Stereo, Immersive Listening

Its hi-fi stereo on-ear speakers offer an immersive experience for music, training videos, and multimedia, while maintaining strong voice clarity for meetings.

USB-C and USB-A Connectivity

The primary USB-C connection offers modern device support, while the included USB-A adapter ensures universal compatibility. This flexibility makes it suitable for evolving enterprise device setups.

Lightweight & Comfortable Design

A lightweight metal headband provides long-lasting durability and a secure fit. Foam ear cushions maintain comfort during prolonged use. Its compact, adjustable boom allows precise mic positioning.

Certified for Major Platforms

The Blackwire 3220 is Works With Chromebook certified and optimized for leading conferencing platforms including Zoom, Microsoft Teams, Google Meet, Cisco Webex, and more.

Technical Specifications Audio

• Acoustic protection: SoundGuard

• Microphone: Noise-canceling

• Microphone bandwidth: 100 Hz to 10 kHz

• Speaker bandwidth:

  • 200 Hz to 6.8 kHz (speech mode)

  • 20 Hz to 20 kHz (media mode)

• Speaker size: 28 mm

• Signal-to-noise ratio: >24 dB

Design & Comfort

• Wearing style: On-ear stereo

• Ear cushions: Foam

• Headband: Lightweight metal

• Weight: 0.28 lb with cable

Connectivity

• USB Type-C

• USB-C/A adapter included

• Total cable length: 5.28 ft

Management

• Compatible with Poly Lens for management and customization

Compatibility

• Windows 10/11

• macOS

• Android

• iOS

• ChromeOS (certified)

Packaging & Warranty

• Warranty: Two-year Poly limited warranty

• In the box: Headset, USB-C to USB-A adapter, user guide

Headset Style	On Ear
SPL (at kHz Vrms)	Speaker sensitivity: 92.5 +- 3 dB SPL @1 kHz
Dimensions Height x Width x Depth	345 mm x 325 mm x 400 mm
PC Cable Length	Headset cable length: 1.2 m (from headset to call control uni

Yealink UH34 Lite Dual with Microphone Wired On Ear Headset, MS Certified, NC Microphone & Passive Noice cancelation Audio, Integrated LED Indicator & MS Teams Button (1.2M Cable), Black
Yealink USB Wired Headset   UH34 Lite: Foamy ear cushions The Yealink UH34/UH34 Lite, available in monaural (UH34/UH34 Lite Mono) and binaural (UH34/UH34 Lite Dual), is a professional USB wired headset with crystal clear audio. The UH34/UH34 Lite offers a lightweight, comfortable form to wear, even for an entire workday. It’s suitable for workers who spend a lot of time wearing headsets for voice communications. Provided with Yealink USB Connect software and Yealink Device Management Platform/Cloud Service, you can easily check the device information and upgrade the firmware of one or multiple UH34/UH34 Lite headsets. Scenarios Scenarios Suitable for daily office use and call center. Key Features Key Features Simple and Flexible Connectivity Simple and Flexible Connectivity Runs right out of the box, and a USB plug-and-play setup makes the connectivity to the PC. You can enjoy a reliable call experience with soft clients. Perfect match with Yealink IP phones give you optimized audio quality. Ultra-lightweight, All Day Wearing Comfort Ultra-lightweight, All Day Wearing Comfort Built for comfort with soft ear cushions and ultra-lightweight materials, the UH34/UH34 Lite is 10%~30%* lighter than other conference headsets in the same range. Its ergonomic design makes this headset comfortable for enouall-daylong conference calls and all-day use. (* Test data provided by Yealink Lab) Unparallel Audio Experience Unparallel Audio Experience Made for calls and music, UH34/UH34 Lite is kitted out with a high signal-to-noise ratio speaker and independent cavity design. The passive noise cancellation creates a richer and clearer conversations with reduced background

Connection Type	USB-C
Headset Type	Over Ear
Audio Channel	Mono
Design	Over-Ear
Speaker Configuration	Stereo
SPL (at kHz Vrms)	Microphone bandwidth: 100 Hz to 10 kHz Speaker bandwidth: 200 Hz to 6.8 kHZ (speech mode); 20 Hz to
Dimensions Height x Width x Depth	185 x 56 x 207 mm
PC Cable Length	79 cm (inline module to headset); 90 cm (USB to inline module); 161 cm (total USB to headset)
Item Dimensions LxWxH	Product dimensions: 155 x 32 x 178 mm
Wearing Style	On-Ear

The Poly Blackwire 3210 USB-C Headset is a professional-grade, single-ear wired headset engineered for clear voice communication, modern UC applications, and long working hours. Ideal for office professionals, hybrid workers, call center agents, and remote teams, it delivers reliable audio performance through a USB-C plug-and-play connection. With Poly’s signature sound technology, intuitive controls, and an ultra-light design, the Blackwire 3210 ensures comfort, clarity, and consistency throughout your workday.

Key Features & Benefits

Clear, Natural Voice Quality
Equipped with wideband audio, dynamic EQ, and DSP (Digital Signal Processing), the headset optimizes sound for speech and multimedia. Voices are crisp and natural, ensuring clear conversations in every meeting or call.

Noise-Canceling Microphone
The noise-canceling omnidirectional microphone reduces background noise and enhances voice pickup. Perfect for shared workspaces and home offices, it helps ensure your voice stays in focus.

USB-C Plug-and-Play
The headset connects instantly to laptops, tablets, and USB-C enabled devices. No drivers required. A wired connection ensures stable, disruption-free audio for calls and conferences.

All-Day Comfort
A lightweight metal-reinforced headband, soft foam ear cushion, and adjustable boom arm provide long-term comfort. The monaural design keeps one ear open for awareness while working.

Inline Call Controls
Built-in controls allow quick management of answer/end, mute, volume, and redial. LED indicators give visual confirmation of call and mute status for seamless workflow.

Optimized for UC Platforms
Compatible with Microsoft Teams, Zoom, Google Meet, Cisco Webex, Avaya, and Skype for Business. Supports Poly Lens for device monitoring and centralized IT management.

Technical Specifications

Audio

• Wideband PC audio

• Dynamic EQ: Auto-adjusts for voice or multimedia

• Speaker bandwidth: 20 Hz – 20 kHz (media), 200 Hz – 6.8 kHz (voice)

• Microphone bandwidth: 100 Hz – 10 kHz

• Acoustic protection: SoundGuard (limits levels to <118 dBA)

Microphone

• Noise-canceling omni microphone

• Flexible boom arm for optimal positioning

Connectivity

• USB-C wired connection

• Cable length: 161 cm

Controls

• Inline call answer/end

• Mute and volume up/down

• LED mute and call indicators

Software & Management

• Poly Lens Desktop App

• Poly Lens Cloud for IT teams

• Device health, insights, and customization

Certifications

• Microsoft Skype for Business

• Avaya, Cisco, and major UC platforms

• TCO Certified

Included Accessories

• Blackwire 3210 USB-C headset

• Quick start documentation

Ideal For

• Office professionals

• Customer support and telecalling

• Hybrid and remote employees

• Online training and virtual collaboration

• Everyday UC communication

Why Choose Poly Blackwire 3210 USB-C?

It offers dependable audio quality, comfortable all-day wear, premium build quality, and seamless compatibility with business communication platforms. For companies seeking an affordable, enterprise-ready headset with USB-C reliability, the Blackwire 3210 is a proven choice.

Connection Type	USB-C
Headset Type	Over Ear
Audio Channel	Stereo
Design	Over-Ear
Speaker Configuration	Mono
Microphone Type	omni-directional
SPL (at kHz Vrms)	200 Hz to 6.8 kHZ (speech mode); 20 Hz to 20 kHZ (media mode)
Dimensions Height x Width x Depth	Package dimensions: 185 x 56 x 207 mm
Item Dimensions LxWxH	Product dimensions: 155 x 32 x 178 mm
Wearing Style	On-Ear

Professional Wired Headset for Calls, Meetings & Multimedia

The Poly Blackwire 3215 is a high-performance, monaural USB-A headset engineered for professionals who need reliable audio quality, all-day comfort, and seamless connectivity. Designed for modern workplaces and hybrid environments, this headset offers wideband PC audio, a noise-canceling microphone, dynamic EQ, and intuitive call controls. It delivers the clarity, comfort, and durability expected from a Poly enterprise-grade headset, making it ideal for contact centers, corporate communication, and remote work.

Key Features & Benefits Outstanding Poly Signature Audio

Enjoy clear, natural sound with PC wideband audio, digital signal processing (DSP), and a noise-canceling microphone that reduces background noise for better voice transmission. Dynamic EQ automatically optimizes settings for calls or media playback.

Flexible Connectivity

The Blackwire 3215 offers USB-A connectivity for PCs and laptops, with an additional 3.5 mm audio jack for select mobile devices. This makes it perfect for professionals who switch between devices throughout the day.

Enhanced Call Control

Inline controls let users easily answer/end calls, adjust volume, mute/unmute, and manage calls efficiently. LED indicators provide quick visibility of call and mute status for a smooth user experience.

Built for Comfort & Durability

A lightweight metal headband ensures long-term durability and a custom fit, while soft foam ear cushions provide comfort for extended use. The monaural design allows users to stay aware of their surroundings.

Optimized for Communication Platforms

The Blackwire 3215 is certified for Skype for Business, Cisco Jabber, and Avaya, and works seamlessly with top virtual meeting platforms. It can also be managed centrally using Poly Lens software.

Technical Specifications Audio Performance

• Dynamic EQ optimized for voice and multimedia

• DSP for enhanced clarity

• Noise-canceling microphone (omnidirectional)

• Speaker bandwidth: 200 Hz – 6.8 kHz (speech), 20 Hz – 20 kHz (media)

• Microphone bandwidth: 100 Hz – 10 kHz

• Acoustic protection: SoundGuard technology

Connectivity

• USB Type-A wired interface

• 3.5 mm audio for compatible mobile devices

• Inline control module with call, mute, and volume functions

Design & Comfort

• On-ear (monaural) wearing style

• Adjustable lightweight metal headband

• Weight: 87 g (with cable)

Device Compatibility

• Windows 10 & 11

• macOS

• Compatible with Poly Lens desktop app

Cable Length

• Inline module to headset: 129.5 cm

• USB to inline module: 90 cm

• Total length: 227 cm

Certifications

• Collaboration: Skype for Business, Cisco Jabber, Avaya

• Eco-label: TCO Certified

What’s in the Box

• Poly Blackwire 3215 Headset

• USB Type-A Cable

Warranty & Build

• 2-year limited warranty

• Country of origin: China or Mexico

Ideal Use-Cases

• Corporate communication

• Contact centers & customer support

• Remote work & virtual meetings

• Multimedia and training sessions

Connection Type	USB-C
Headset Type	Over Ear
Design	Over-Ear
Speaker Configuration	Stereo
Microphone Type	omni-directional
Dimensions Height x Width x Depth	Package dimensions: 7.48 x 8.26 x 2.16 in
Brand	Poly
PC Cable Length	4.25 ft (inline module to headset); 2.95 ft (USB to inline module); 7.45 ft (total USB to headset)
Item Dimensions LxWxH	Product dimensions: 6.1 x 1.25 x 7.1 in

Professional Wired Stereo Headset for Calls, UC, and Hybrid Work

The Poly Blackwire 3225 USB-C Headset is a premium, enterprise-class stereo headset engineered for professionals who need clear communication, high-quality audio, and flexible device connectivity. Designed for hybrid work, call centers, office environments, and remote teams, it offers USB-C, USB-A (via adapter), and 3.5mm audio connectivity, making it ideal for modern multi-device workflows.

Lightweight, durable, and comfortable for long hours, the Blackwire 3225 delivers Poly-grade audio with a noise-canceling microphone, hi-fi stereo speakers, dynamic EQ, SoundGuard protection, and intuitive inline controls. Optimized for collaboration platforms and certified for Chromebook, it ensures consistent performance across calls, meetings, and multimedia applications.

Key Features & Benefits Clear, Professional-Grade Audio

Equipped with PC wideband audio, digital signal processing, and dynamic EQ, the headset enhances speech clarity and automatically adjusts sound profiles for calls, music, and media.

Noise-Canceling Microphone

The noise-canceling mic filters background noise so your voice remains clear in busy or shared environments—ideal for offices, support teams, and remote professionals.

Three Connection Options

The Blackwire 3225 provides USB-C, USB-A (adapter included), and 3.5mm connectivity, offering broad compatibility with laptops, mobile devices, tablets, and Chromebooks. Perfect for BYOD and flexible device setups.

Optimized for Collaboration

Certified for Works With Chromebook and compatible with leading UC platforms such as Zoom, Google Meet, Microsoft Teams, Cisco Webex, Avaya, and more.

Technical Specifications Audio & Microphone

• Acoustic protection: SoundGuard

• Microphone: Noise-canceling

• Microphone bandwidth: 100 Hz – 10 kHz

• Speaker bandwidth:

  • 200 Hz – 6.8 kHz (speech mode)

  • 20 Hz – 20 kHz (media mode)

• Speaker size: 28 mm

• SNR: >24 dB

• Microphone sensitivity: 10 dB SLR

• Speaker sensitivity: 6 dB RLR

Connectivity

• Wired: USB Type-C, USB-C/A adapter, 3.5mm audio jack

• Cable length:

  • 4.25 ft (inline module to headset)

  • 2.95 ft (USB to inline module)

  • 7.45 ft total

Design & Comfort

• Wearing style: On-ear stereo

• Ear cushions: Artificial leather

• Weight: 0.28 lb with cable, 0.20 lb without cable

Compatibility

• Windows 10 & 11

• macOS

• Android

• iOS

• ChromeOS (certified)

Management

• Manageable through Poly Lens software

Package Contents

• Blackwire 3225 Headset

• USB-C to USB-A adapter

• Travel case

• User guide

Warranty

• Two-year Poly limited warranty

Model Information

• Product name: Poly Blackwire 3225 Stereo USB-C Headset + 3.5mm Plug + USB-C/A Adapter (Bulk)

• Product number: 8X229A6

Ideal For

• Corporate and hybrid workplaces

• Customer service and call centers

• Remote employees and online educators

• UC-based communication

Headset Type	Over Ear
Design	Over-Ear
Speaker Configuration	Stereo
Microphone Type	omni-directional
Brand	Poly
PC Cable Length	3.85 ft (inline module to headset); 2.95 ft (USB to inline module); 7.05 ft (total USB to headset)
Speakers Rx Distortion	Speaker bandwidth: 20 Hz to 20 kHz, Speaker size: 32 mm
Mobile Cable Length	3.85 ft (inline module to headset); 2.95 ft (USB to inline module); 7.05 ft (total USB to headset)

Microsoft Teams Certified | Professional Wired Stereo UC Headset

The Poly Blackwire 3325 USB-C Headset is a premium, business-grade stereo headset built for professionals who need reliable audio quality, long-wearing comfort, and flexible connectivity. Designed for hybrid workers, corporate users, and contact centers, this headset combines Poly’s proven audio engineering with modern device compatibility. With USB-C, USB-A (via adapter), and a 3.5mm plug, the Blackwire 3325 easily connects to laptops, PCs, tablets, and mobile devices, making it ideal for BYOD environments and multi-device workflows.

The headset offers clear, natural sound with noise and echo reduction, dynamic EQ, and wideband stereo speakers. A comfortable padded headband and pillow-soft ear cushions ensure all-day comfort. It features a dedicated Microsoft Teams button, enabling instant access to the Teams app during calls and meetings.

Key Features & Benefits Professional-Grade Audio

Wideband stereo speakers and dynamic EQ enhance clarity during calls and provide a richer audio experience for music and media. Noise and echo reduction ensure consistent voice quality in busy or shared spaces.

Noise-Canceling Microphone

The omnidirectional microphone captures your voice clearly while minimizing background noise, making conversations more professional and distraction-free.

Flexible Multi-Device Connectivity

Connect easily using USB-C, USB-A (adapter), or 3.5mm audio, supporting laptops, desktops, tablets, and smartphones. Ideal for remote workers and teams using diverse devices.

Comfort for Long-Duration Use

A plush padded headband and soft leatherette ear cushions support all-day wear. Each ear speaker can swivel 180 degrees, allowing users to find a personalized, comfortable fit.

Inline Call Controls

Quick-access buttons allow control of mute, volume, call answer/end, and Microsoft Teams functions. LED indicators provide clear visibility of call status.

Certified for Microsoft Teams

The Teams-certified version includes a dedicated Teams button for instant meeting access and optimized integration with the Teams environment.

Technical Specifications Audio

• Noise and echo reduction

• Dynamic EQ optimized for calls and media

• Microphone type: Omnidirectional

• Microphone bandwidth: 100 Hz – 10 kHz

• Speaker bandwidth: 20 Hz – 20 kHz

• Speaker size: 32 mm

• Max SPL: 118 dB

• SNR: >118 dB

• Acoustic protection: SoundGuard

Connectivity

• USB-C wired

• USB-C to USB-A adapter included

• 3.5mm audio connection

• Cable length:

  • 3.85 ft inline module to headset

  • 2.95 ft USB to inline module

  • 7.05 ft total

Design & Comfort

• On-ear stereo wearing style

• Leatherette ear cushions

• Flexible adjustable mic boom

• Weight: 131 g

• Color: Black

Compatibility

• Windows 10 & higher

• macOS

• UC certified

• Microsoft Teams certified

Included in the Box

• Poly Blackwire 3325 Stereo Headset

• USB-C to USB-A adapter

• User guide

Warranty

• 2-year Poly limited warranty

Connectivity	USB
Type	Monaural & Binaural
Rotation	300 Degree Boom Arm Rotation
Connection Options	RJ9, USB, 2.5mm Jack
USP	Ultra High Noise Cancellation Microphone

The Numero NU 290 is a professional-grade noise-canceling headset designed for call centers, offices, and remote work environments. It delivers crystal-clear audio, superior comfort, and durability, making it ideal for long hours of communication.

Key Features & Specifications

🔹 Audio Quality
✔ Superior HD Wideband Sound for clear voice transmission
✔ Ultra High Noise-Canceling Microphone for background noise reduction
✔ Acoustic Shock Protection Diode to prevent sudden sound spikes

🔹 Design & Durability
✔ Available in Monaural & Binaural models
✔ Special Reinforced Headset Construction for long-lasting durability
✔ Flexible Boom Arm for easy microphone positioning
✔ Clickstop Boom Arm Movement with smooth 300° rotation

🔹 Comfort & Convenience
✔ Clickstop Adjustable Headband for a perfect fit
✔ Superior all-day comfort for extended usage
✔ Robust Quick Disconnect Mechanism for easy handling

🔹 Connectivity Options
✔ Compatible with USB, RJ, and 2.5mm interfaces

Why Choose the NU 290?

✅ Perfect for call centers, business communication, and remote work
✅ Enhanced noise cancellation for distraction-free conversations
✅ Durable, adjustable, and comfortable for long-term use

Connection Type	Bluetooth
Headset Type	Over Ear
Design	Over-Ear
Speaker Configuration	Stereo
Microphone Type	omni-directional
SPL (at kHz Vrms)	Speaker bandwidth: 20 Hz to 20 kHz
Dimensions Height x Width x Depth	7.32 x 8.26 x 4.52 in
PC Cable Length	59.05 in
Item Dimensions LxWxH	6.1 x 2.6 x 7.2 in

Professional Wireless Bluetooth Headset for Hybrid Work & Office Productivity

The Poly Voyager 4320 USB-A Headset with BT700 dongle is a professional-grade wireless headset designed for today’s hybrid workforce. It offers outstanding audio clarity, long-range wireless freedom, and seamless integration with Microsoft Teams, Zoom, and all major UC platforms. Lightweight, comfortable, and built for all-day productivity, the Voyager 4320 is ideal for remote workers, office users, call centers, and enterprise communication environments.

With a wireless range of up to 164 ft (50 m) using the included BT700 adapter, users can walk, move, and multitask without losing connection. Acoustic Fence® noise-canceling microphone technology ensures clear voice transmission by eliminating background noise, while powerful stereo speakers deliver rich sound for calls, meetings, and multimedia. The on-ear design, soft ear cushions, and adjustable headband support long-duration use with minimal fatigue.

The headset offers exceptional battery performance with up to 24 hours of talk time, 47 hours of listening time, and up to 50 days standby time, ensuring uninterrupted work sessions. 

Key Features & Benefits

• Long-Range Wireless Freedom
  Up to 164 ft / 50 m of Bluetooth range with the BT700 adapter for smooth mobility.

• Clear Voice Pickup with Acoustic Fence
  Noise-canceling microphone isolates your voice from background noise for professional call clarity.

• Microsoft Teams Certified
  Dedicated Teams button enables instant access and optimized performance within the Teams environment.

• All-Day Battery Life
  Up to 24 hours talk time, 47 hours listening time, and 50 days standby.

• Comfort-Focused Design
  Soft leatherette ear cushions and lightweight on-ear stereo design for extended wear.

• Multi-Device Connectivity
  Connect to PCs and laptops via BT700 or USB cable, and simultaneously to smartphones via Bluetooth.

• Enterprise Device Management
  Supported by Poly Lens for centralized monitoring and updates.

Technical Specifications Audio

• Acoustic Fence noise-canceling microphone

• SoundGuard Digital acoustic protection

• Microphone bandwidth: 100 Hz–6.8 kHz

• Speaker bandwidth: 20 Hz–20 kHz

• Speaker size: 32 mm

• Microsoft Teams Open Office certified

Connectivity

• Wireless: Bluetooth 5.1

• BT700 USB-A dongle included

• Pair up to 8 devices

• Bluetooth profiles: A2DP, AVRCP, HFP, HSP

Battery

• Talk time: up to 24 hours

• Listen time: up to 47 hours

• Standby: up to 50 days

• Charge time: < 1.6 hours

• Battery type: 350 mAh Li-ion

Range

• Up to 164 ft (50 m) with BT700

• Up to 300 ft with Voyager Office Base (optional accessory)

Controls

• Power, Call Answer/End, Mute, Volume, Pairing

• Voice alerts for mute, volume, connection, and battery

Weight & Dimensions

• Weight: 0.35 lb

• Dimensions: 6.1 × 2.6 × 7.2 in

• Cable length: 59 in

Included in Box

• Voyager 4320 headset

• BT700 USB-A Bluetooth adapter

• USB charging cable

• Travel pouch

• Quick start guide

Warranty

• Poly 2-year standard limited warranty

Connectivity Technology	Wireless
Headset Type	Over Ear
Connection Type	Bluetooth
Headphone Type	Stereo
Design	Over-Ear
Form Factor	Over Ear
Speaker Configuration	Stereo
Bluetooth Version	5.1
Charging Time	2 hours
Microphone Type	omni-directional
Standby Time	Upto 30 days
Dimensions Height x Width x Depth	7.48 x 8.26 x 4.52 in
PC Cable Length	1.5 m
Item Dimensions LxWxH	6.1 x 2.6 x 7.2 in

Premium Stereo Bluetooth Headset with Hybrid ANC and Acoustic Fence Technology

The Poly Voyager Focus 2 is a top-tier professional Bluetooth headset engineered for crystal-clear communication, immersive audio, and all-day comfort. Ideal for hybrid workers, corporate professionals, call-intensive roles, and premium UC environments, it creates a personal “focus zone” using advanced digital hybrid Active Noise Cancellation (ANC). With certification for Microsoft Teams, a dedicated Teams button, and seamless connectivity via Bluetooth 5.1 or the included BT700 USB adapter, this headset delivers exceptional performance for calls, virtual meetings, and multimedia.

The discreet boom microphone uses Acoustic Fence® technology, forming a virtual noise-free bubble that ensures only your voice is heard, even in noisy environments. Smart sensors enable intuitive features like auto-play/pause for music and auto-mute when taking the headset off. The included desktop charging stand ensures the device stays powered throughout the workday, while USB audio mode provides uninterrupted use even when charging.

Key Features & Benefits Hybrid ANC for Superior Focus

Three adjustable ANC levels reduce background noise and help maintain focus in busy environments.

Acoustic Fence Noise Cancellation

Four built-in microphones (2 ECM + 2 MEMS) with Acoustic Fence technology isolate your voice and block unwanted sound.

Microsoft Teams Certified

Dedicated Teams button for instant access, optimized calling experience, and easy meeting management.

Long Wireless Range & Battery Life

Up to 50 m (164 ft) range with the BT700 adapter and up to 25 hours of talk time (ANC off). Supports USB audio while charging.

Smart Sensors & Controls

Auto-mute, auto-answer, volume, ANC control, and programmable buttons offer intuitive interaction.

Multi-Device Connectivity

Connect to PC via BT700 USB-A or USB cable and to mobile devices via Bluetooth 5.1.

Technical Specifications Audio

• Speaker bandwidth: 20 Hz to 20 kHz

• Microphone bandwidth: 100 Hz to 6.8 kHz

• Acoustic protection: SoundGuard Digital

• ANC modes: Off / Low / High

• Speaker size: 32 mm

Microphone System

• 2 analog ECM mics + 2 digital MEMS mics

• Acoustic Fence noise suppression

Connectivity

• Bluetooth 5.1

• Wireless range: Up to 50 m (164 ft)

• PC connection: BT700 USB-A adapter or USB cable

• Mobile connection: Bluetooth

• Supports A2DP, AVRCP, HFP, HSP profiles

• Pair up to 2 devices simultaneously

Battery & Power

• Talk time:

  • Up to 25 hrs (ANC and indicator off)

  • Up to 20 hrs (ANC + indicator on)

• Music time: Up to 40 hrs (ANC off)

• Standby: Up to 30 days

• Charge time: < 2 hrs

• Battery: 560 mAh Li-ion

What’s in the Box

• Voyager Focus 2 Headset

• BT700 USB-A Bluetooth Adapter

• Charging Stand

• Micro USB Charging Cable

• Travel Pouch

• Quick Start Guide

Certifications

• Microsoft Teams

• TCO Certified

Management

• Compatible with Poly Lens for device analytics and updates

Headset Type	over-the-head
Connectivity Type	Wired
Material	ABS
Brand	Accutone
Model Name/Number	TB710 RJ
Weight	40g
Headphone Type	Direct RJ Telephone Headset
Is It With Microphone	With Microphone
Impedance	2200 OHM
Frequency Response	200~5000Hz

Lightweight & Durable Headset. Weighing about 40 grams (depending on the model), the 710-RJ series is the strongest headset ever-built within the lightweight class.
Direct Connect Cable. By removing the quick-disconnect -or, the 710-RJ makes connection to Accutone Dialer series headset telephone or any compatible desktop phones simple and easy.
Award-Winning Design. Minimalistic design with elegant curves and well-built architecture gives the 710-RJ a perfectcombination of style and functionality.
Professional Acoustic Performance. Equipped with a proprietary 28mm voice-enhance speaker, and the latest technology of noise-cancelling microphone boom, the call clarity for the 710-RJ headset is simply excellent.
Perfect Fit and Adjustments. With an extendable metallic headband, rotatable earpiece and multi-adjustable microphone boom, the 710-RJ fits users of all head sizes and preferences.
ASP. Sound protection against sudden burst of incoming signal is protected by the Acoustic Shock Protection circuitry