1. Introduction
This manual provides instructions for the proper use and maintenance of your Callez W500D2 2.5mm Phone Headset. This headset is designed for use with compatible landline and cordless DECT phones, offering clear communication with its noise-cancelling microphone and convenient in-line controls.
2. Package Contents
Please verify that all items are present in your package:
- Callez W500D2 Headset
- User Manual
- Ear Cushions (pre-installed or spare)
- Cable (integrated)
- Headband (integrated)
3. Compatibility & Setup
3.1 Compatibility Notes
This headset is specifically designed for landline phones and most cordless DECT phones equipped with a standard 2.5mm headset jack. It is NOT compatible with cell phones or computers, which typically use a 3.5mm jack.
Compatible phone brands include, but are not limited to: VTech, Panasonic, AT&T, RCA, Cisco SPA, Uniden, Grandstream, Polycom, Gigaset, Clarity, Zultys, and Cortelco.
Specific Panasonic DECT phone models known to be compatible include: KX-TGE633M, KX-TGF352N, KX-TGA470, KX-TGA652, KX-TGA660, KX-TGA931T, KX-TGA950B, KX-TGE430B, KX-TGE432, KX-TGE433B, KX-TGEA20, KX-TGEA40, KX-TG6592T, KX-NT136, KX-NT343, KX-NT346, KX-NT553, KX-T7603, KX-T7625, KX-T7630, KX-T7633.
Always check your phone's specifications or the port on the side or bottom of your phone to ensure it has a 2.5mm headset jack before connecting.

Image: Phone Brand Compatibility. This headset is compatible with phones featuring a 2.5mm jack, not 3.5mm jacks found on mobile phones or computers.

Image: Panasonic DECT Phone Compatibility. The headset connects via a 2.5mm jack to the corresponding port on your phone.
3.2 Setup Instructions
- Locate the 2.5mm Headset Jack: Identify the 2.5mm headset jack on your compatible landline or cordless DECT phone. This port is typically located on the side or bottom of the phone.
- Connect the Headset: Firmly insert the 2.5mm jack of the Callez W500D2 headset into the headset port on your phone. Ensure a secure connection.
- Test Connection: Make a test call to confirm that audio is clear and the microphone is functioning correctly.

Image: Headset Connection. The headset is shown plugged into a compatible landline phone, ready for use.
4. Operating Instructions
4.1 Adjusting for Comfort
The Callez W500D2 headset is designed for all-day comfort:
- Adjustable Headband: Extend or retract the headband to fit your head size comfortably.
- Soft Ear Cushion: The leatherette ear cushion provides comfort during extended use.
- Rotating Microphone: The microphone boom can be rotated 330 degrees to position it optimally for your voice and to wear the headset on either ear.

Image: Comfort Features. The headset offers an adjustable headband, soft ear cushion, and a rotating microphone for personalized comfort.
4.2 Using In-line Controls
The headset features an in-line control unit for easy management of calls:
- Volume Control: Use the slider switch on the in-line control to adjust the listening volume.
- Microphone Mute: Use the ON/OFF switch on the in-line control to mute or unmute your microphone. Set to 'OFF' to mute, 'ON' to unmute.

Image: In-line Controls. The control unit allows for easy volume adjustment and microphone muting.
5. Maintenance
5.1 Cleaning and Care
- Wipe the headset with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Keep the ear cushions clean and dry. Replace them if they become worn or damaged.
- Avoid exposing the headset to extreme temperatures, humidity, or direct sunlight.
5.2 Storage
When not in use, store the headset in a clean, dry place, away from dust and potential damage. Avoid tangling the cable to prolong its lifespan.
6. Troubleshooting
6.1 Common Issues and Solutions
- No Sound or Low Volume:
- Ensure the 2.5mm jack is fully inserted into the phone's headset port.
- Check the volume control on the in-line unit and on your phone. Increase the volume as needed.
- Confirm your phone's headset function is activated (refer to your phone's manual).
- Microphone Not Working:
- Ensure the microphone mute switch on the in-line control is set to 'ON' (unmuted).
- Position the microphone close to your mouth.
- Verify the headset is correctly plugged into the phone.
- Static or Unclear Audio:
- Ensure the 2.5mm jack is clean and free of debris, and fully inserted.
- Test the headset with another compatible phone if possible to rule out phone-related issues.
- Check for any nearby electronic devices that might cause interference.
- Headset Does Not Fit My Phone:
- Confirm your phone has a 2.5mm headset jack. This headset is not compatible with 3.5mm jacks or USB ports.
- Refer to the compatibility list in Section 3.1 or your phone's manual.
7. Specifications
| Feature | Specification |
|---|---|
| Model Name | W500D2 |
| Connectivity Technology | Wired |
| Headphones Jack | 2.5 mm Jack |
| Noise Control | Sound Isolation, Noise Cancellation (Microphone) |
| Control Type | Volume Control, Microphone Mute (In-line) |
| Material | Leather, Metal, Plastic |
| Item Weight | 5.3 ounces |
| Ear Placement | On Ear |
| Special Features | Adjustable Headband, Lightweight, Microphone Included, Volume Control |
8. Warranty & Support
8.1 Warranty Information
The Callez W500D2 headset comes with a 45-day money-back guarantee and a 24-month worry-free guarantee. Please retain your proof of purchase for warranty claims.
8.2 Customer Support
If you encounter any issues not covered in this manual, or require further assistance, please contact Callez customer support. Contact information can typically be found on the product packaging or the official Callez website.