Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your Plantronics Voyager Focus UC B825-M wireless headset. Designed for business use, this headset offers advanced audio features and versatile connectivity to enhance your communication experience.

Figure 1: Plantronics Voyager Focus UC B825-M Headset. This image shows the black over-ear headset with a microphone boom, designed for comfortable wear and clear communication.
Setup
1. Charging the Headset
Before initial use, fully charge your headset. Connect the charging cable (not included, typically USB-A to Micro-USB) to the headset's charging port and a USB power source. The LED indicator on the headset will show charging status and turn off or change color when fully charged.
2. Connecting via USB Adapter (for PC/Mac)
- Insert the Plantronics USB adapter (often included with UC versions) into an available USB port on your computer.
- Power on your headset. The headset and adapter are pre-paired and should connect automatically.
- The LED on the USB adapter will turn solid blue when connected to the headset.
- Select the Plantronics headset as your default audio device in your computer's sound settings.

Figure 2: Plantronics USB Bluetooth Adapter. This small black USB dongle is used to connect the headset wirelessly to a computer, ensuring optimal performance for unified communications.
3. Connecting via Bluetooth (for Mobile Devices)
- With the headset powered off, press and hold the Power button until the LED flashes red and blue, indicating pairing mode.
- On your mobile device, go to Bluetooth settings and enable Bluetooth.
- Select "PLT Focus" or similar from the list of available devices.
- Once paired, the headset LED will stop flashing and remain solid blue.
Operating Instructions
Basic Controls
- Power On/Off: Slide the Power switch located on the earcup.
- Volume Control: Use the volume up (+) and volume down (-) buttons on the earcup.
- Mute/Unmute: Press the Mute button on the microphone boom or earcup during a call.
- Answer/End Call: Press the Call button on the earcup.
- Play/Pause Audio: Press the Call button when not on a call.
Active Noise Cancellation (ANC)
The Plantronics Voyager Focus UC B825-M features Active Noise Cancellation to reduce background noise. To activate or deactivate ANC, locate the dedicated ANC switch on the earcup and slide it to the desired position. This feature is particularly useful in noisy environments to improve focus during calls or when listening to media.
Smart Sensors
Your headset is equipped with smart sensors that can automatically answer calls when you put on the headset, or pause music when you take it off. These sensors can be customized or disabled via the Plantronics Hub software (downloadable from the Plantronics website).
Dual Connectivity
The headset supports dual connectivity, allowing you to connect to two devices simultaneously (e.g., a computer via USB adapter and a mobile phone via Bluetooth). This enables seamless switching between calls on different devices.
Maintenance
Cleaning
- Gently wipe the ear cushions and headband with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials.
- Ensure no moisture enters the speaker openings or microphone.
Storage
- Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- When not in use, it is recommended to store the headset in its protective case (if included) to prevent damage.
Battery Care
- To prolong battery life, avoid fully discharging the battery frequently.
- Charge the headset regularly, even if not in constant use.
- Do not expose the battery to high temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No audio or poor audio quality | Headset not connected; low battery; incorrect audio settings. |
|
| Microphone not working | Microphone muted; incorrect microphone settings. |
|
| Headset not pairing via Bluetooth | Headset not in pairing mode; device Bluetooth off. |
|
| Headset not connecting to USB adapter | Adapter not properly inserted; headset not powered on; adapter needs re-pairing. |
|
Specifications
| Model | Voyager Focus UC B825-M (Part Number: 202652-04) |
| Brand | Plantronics |
| Connectivity Technology | Wireless |
| Wireless Communication Technology | Bluetooth 5.0 |
| Earpiece Shape | Over Ear |
| Form Factor | Over Ear |
| Noise Control | Active Noise Cancellation |
| Audio Driver Type | Dynamic Driver |
| Material | Plastic |
| Color | Black |
| Item Weight | 5.5 ounces (approx. 156 grams) |
| Dimensions (L x W x H) | 10 x 2 x 2.7 inches |
| Batteries | 1 Lithium Polymer battery (included) |
| Specific Uses For Product | Business |
| Special Feature | Lightweight |
Product Overview Video
Video 1: Plantronics Voyager Focus UC Headset Overview. This video provides a brief introduction to the key features and design of the Plantronics Voyager Focus UC headset, including its wireless functionality, compact design, and device compatibility.
Warranty and Support
For warranty information, technical support, or to purchase genuine replacement parts, please refer to the official Plantronics (now Poly) website or contact their customer service directly. Keep your proof of purchase for warranty claims.
Note: Parts should be installed by experienced technicians to ensure proper functionality and to maintain warranty validity.





