Introduction
This manual provides essential instructions for the setup, operation, and maintenance of your Plantronics W420 Over-The-Head Binaural Wireless Headset. The W420 is designed for PC-based office and remote workers, offering wireless freedom and clear audio quality. It utilizes DECT technology for superior sound and extended range.
Package Contents
Verify that your package contains the following items:
- Plantronics W420 Wireless Headset (Over-The-Head, Binaural)
- Charging Base
- USB DECT Adapter
- Power Adapter for Charging Base

Image: The Plantronics W420 wireless headset, featuring an over-the-head binaural design with a microphone boom, resting on its charging base. A compact USB DECT adapter is shown next to the base.
Setup
1. Connecting the USB Adapter
- Insert the USB DECT adapter into an available USB port on your computer.
- Allow your computer to recognize and install the necessary drivers. This process is typically automatic.
- Ensure the adapter's indicator light is active, indicating a successful connection.
2. Charging the Headset
- Connect the power adapter to the charging base and plug it into a power outlet.
- Place the W420 headset onto the charging base, ensuring it is seated correctly.
- The headset's indicator light will show its charging status. A full charge typically takes approximately 3 hours. A 20-minute charge can provide about 1 hour of talk time.
3. Wearing the Headset
- Adjust the headband for a comfortable fit over your head.
- Position the microphone boom approximately two finger-widths from the corner of your mouth.
- The binaural design provides audio to both ears for immersive sound and improved focus.
Operating Instructions
Call Management
- Answer/End Call: Press the Call Control button on the headset to answer or end a call.
- Volume Control: Use the Volume Up (+) and Volume Down (-) buttons on the headset to adjust listening volume.
- Mute Microphone: Press the Mute button on the headset to mute or unmute your microphone during a call.
- Flash Function: The flash button allows for simple call management features, such as switching between calls, depending on your softphone application.
Wireless Range
The Plantronics W420 offers a wireless range of up to 300 feet (approximately 91 meters) from your computer, allowing you to move freely while on calls. Environmental factors such as walls and other electronic devices may affect the actual range.
Audio Quality
- DECT Technology: Provides clear audio by minimizing interference from Wi-Fi networks.
- Wideband Audio: Utilizes CAT-iq technology for high-definition voice quality.
- Noise-Canceling Microphone: Reduces background noise for clearer communication for your listener.
- Active Noise Cancellation (ANC): The headset features active noise cancellation to reduce ambient noise for the user.
Maintenance
Battery Information
- The headset is equipped with a Lithium Ion battery.
- Expected talk time is up to 7 hours on a full charge.
- Always return the headset to its charging base when not in use to ensure it is ready for your next call.
Cleaning
- Wipe the headset and charging base with a soft, dry, or slightly damp cloth.
- Avoid using harsh chemicals or abrasive cleaners.
- Ensure all components are dry before charging or use.
Troubleshooting
| Problem | Solution |
|---|---|
| No audio from headset |
|
| Microphone not working |
|
| Limited wireless range or interference |
|
| Headset not charging |
|
Specifications
| Model Name | W420 Over-the-head, Binaural (Standard) |
| Model Number | 84008-03 |
| Connectivity Technology | Wireless (DECT) |
| Wireless Range | Up to 300 feet (91 meters) |
| Wearing Style | Over-the-head, Binaural (Supra-aural) |
| Microphone | Noise-canceling |
| Noise Control | Active Noise Cancellation (ANC) |
| Battery Type | 1 Lithium Ion battery (included) |
| Talk Time | Up to 7 hours |
| Full Charge Time | Approximately 3 hours |
| Weight | 1.1 pounds (0.5 kg) |
| Dimensions (Product) | 7.97 x 7.09 x 2 inches (20.24 x 18.01 x 5.08 cm) |
| Compatible Devices | Computers, Laptops |
Warranty and Support
For warranty information, technical support, or to access additional resources, please visit the official Plantronics (now Poly) website. Product registration may be required for warranty claims.
Manufacturer: Plantronics, Inc.





