1. Product Overview
The radtel Bluetooth Headset is designed to provide hands-free communication for two-way radios, offering simultaneous connection to both your walkie-talkie and a mobile phone. It features noise cancellation for clear audio and a convenient wireless Push-To-Talk (PTT) button.

Image: The radtel Bluetooth Headset, Bluetooth adapter, and wireless finger PTT button.
2. Package Contents
Verify that all items are present in your package:
- 1x Bluetooth Headset
- 1x Bluetooth Adapter for Radios
- 1x Wireless Finger PTT
- 1x Charging Cable
- 1x Plastic Bander (for PTT)
- 2x Silicone Earbud Maps
- 1x English User Manual

Image: All components included in the package, numbered for easy identification.
3. Compatibility
This headset is compatible with two-way radios featuring a K-type connector (two-pin plug with 3.5mm and 2.5mm connectors).
Compatible Radio Models:
- Baofeng: UV-5R, UV-82, BF-F8HP, UV-17R, BF-888S, AR-152, GM-15 (and almost all models)
- Radtel: RT-12, RT-590, RT-830, RT-890, RT-470X, RT-470, RT-630, RT-490
- Retevis: RT22, RT22S, RT21, RT68, H777, RA79, RT-5R, RT-17, RT-29
- Kenwood: KPG27D, KPG29D, KPG48D, KPG49, KPG55D, KPG56D, TH-D7, TH-D7A, TH-D7AG, TH-D7E, TH-F6, TH-F6A
- TYT: MD-UV380, TH-UVF8D, TH-UVF9D, TH-UV8000D/E, MD-380, MD-390
- HYT: TC286/386/2685/3865/6685/278/378/388/2100/2088
- WOUXUN: KG-UV8D, UV6D, UVD1PUV-899
- PUXING: PX-777, PX-888, PX-888K, PX-325, PX-358
- Quansheng: UV-K5, UV-K5(99), UV-K6, UV-5R PLUS
Incompatible Brands:
This headset is NOT compatible with Motorola, Icom, Yaesu, Hytera, Midland, or similar radios that do not use the K-type connector.

Image: Visual guide to compatible radio brands and models, highlighting the K-type connector.
4. Components and Controls
Bluetooth Headset
The headset features an ergonomic design, suitable for both left and right ears with a 270-degree rotating earpiece. It includes integrated controls for power, volume, and PTT.

Image: The Bluetooth headset demonstrating its 270-degree rotating design for left or right ear use.
Wireless Finger PTT
The wireless finger PTT button allows for convenient push-to-talk functionality, especially useful for activities requiring hands-free operation.

Image: A close-up view of the wireless finger PTT button, showing its compact design.
5. Setup Guide
5.1 Charging Instructions
The Bluetooth headset, adapter, and wireless PTT key each have internal rechargeable batteries. Use the provided USB charging cable to charge them via a standard DC 5V power supply (e.g., computer USB port, power bank).
- Charging Indicator: A red light will be on during charging.
- Full Charge Indicator: The red light will turn off when fully charged.
- Charging Time: Approximately 1-2.5 hours for the headset.
5.2 Bluetooth Adapter Installation
Insert the Bluetooth adapter into the K-type intercom port of your two-way radio.

Image: Diagram illustrating the correct method for installing the Bluetooth adapter into the radio's accessory port (Figure 1) and removal (Figure 2).
5.3 Pairing Instructions
Follow these steps to pair your devices:
- Bluetooth Adapter Power On/Off:
Press and hold the Multi-function button on the adapter for 2 seconds to power on (blue light glints). Press and hold for 3 seconds to power off (red light glints). - Bluetooth Adapter Pairing Mode:
When the adapter is OFF, press and hold the Multi-function button for approximately 7 seconds to enter pairing status. The red and blue lights will glint alternately. - Wireless PTT Key Pairing:
Ensure the wireless PTT key is charged. With the Bluetooth adapter in pairing mode, press the PTT button on the wireless PTT key for about 1 second. The adapter's red light will disappear, indicating successful pairing. - Bluetooth Headset Pairing:
Ensure the Bluetooth headset is charged and powered off. Press and hold the On/Off button on the headset for 6 seconds to enter Bluetooth pairing mode (blue and red lights glint alternately). Place the headset near the paired adapter. Wait approximately 40 seconds for the initial pairing. When the alternating red and blue lights disappear, and only the blue light glints, the headset is successfully paired with the adapter.
6. Operating Instructions
6.1 Headset Controls
Refer to the diagram below for button identification:

Image: Detailed diagram showing the location and function of buttons on the Bluetooth headset (buttons 1-7) and indicator light.
- Walkie Talkie PTT Button: Press to transmit via the radio.
- On/Off Button:
- Long press 2 seconds to turn on/off.
- Long press 6 seconds to enter Bluetooth pairing mode.
- Press to pause/continue music.
- Press to answer/end phone calls.
- Volume Up Button:
- Press to increase volume.
- Long press 2 seconds for previous song (during music playback).
- Volume Down Button:
- Press to decrease volume.
- Long press 2 seconds for next song (during music playback).
6.2 Indicator Light Status
- Blue light flashes slowly: Power on, in standby mode.
- Blue light flashes fast: Bluetooth connection is interrupted. Check if the earpiece is on or within range.
- Red light on: Device is transmitting (via radio).
- Red light off: Transmission ended.
- Low battery tips: In standby mode, the red light flashes to indicate low battery. Charge promptly.
6.3 Dual Connection (Radio and Mobile Phone)
The headset can be paired with both the walkie-talkie (via the Bluetooth adapter) and a mobile phone simultaneously. When a radio transmission is received, it will take priority. After 8 seconds of radio inactivity, the headset will automatically return to the mobile phone pairing state, allowing you to listen to music or manage calls.

Image: Illustration of the headset's ability to connect to both a two-way radio and a smartphone simultaneously.
6.4 Noise Reduction Function
To activate or deactivate the noise reduction function, press and hold the Volume + and Volume - buttons simultaneously. This feature helps to eliminate background noise for clearer communication.

Image: Visual representation of the noise cancelling function, showing sound wave reduction.
6.5 Language Switching
To switch the voice prompt language, press and hold the Power and Volume - buttons simultaneously.
6.6 Pairing Elimination (Reset)
To clear all previous pairings, press and hold the Power and Volume + buttons simultaneously. You will hear a beep indicating the reset is complete.
7. Maintenance
To ensure the longevity and optimal performance of your radtel Bluetooth Headset, follow these maintenance guidelines:
- Cleaning: Wipe the headset and adapter with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For extended storage, charge the battery to about 50% every few months to prevent deep discharge.
- Water Resistance: The product is water resistant, but not waterproof. Avoid submerging it in water or exposing it to heavy rain.
8. Troubleshooting
If you encounter issues with your radtel Bluetooth Headset, refer to the following common problems and solutions:
- Difficulty Pairing:
- Ensure all devices (headset, adapter, PTT) are fully charged.
- Make sure the adapter and headset are in pairing mode (alternating red/blue lights).
- Keep devices within close proximity (within 1 meter) during pairing.
- Try resetting the headset's pairings (Power + Volume + simultaneously) and re-attempt the pairing process.
- Verify that the Bluetooth adapter is correctly inserted into the radio.
- No Audio or Poor Audio Quality:
- Check volume levels on both the headset and the connected radio/phone.
- Ensure the headset and adapter are properly paired and connected.
- Verify that the radio is transmitting and receiving correctly.
- Move closer to the connected devices to ensure you are within the 10-meter Bluetooth range.
- Activate the noise reduction function if background noise is an issue (Power + Volume - simultaneously).
- Short Battery Life:
- Ensure the device is fully charged before use.
- Operating at maximum volume or in areas with weak signal can consume more power.
- Battery life is rated for approximately 5-8 hours of work time and less than 100 hours standby.
- PTT Function Not Working:
- Ensure the wireless PTT key is charged and correctly paired with the Bluetooth adapter.
- Verify that the PTT button on the headset itself is functioning.
- Confirm that the radio is powered on and set to a transmitting channel.
- Headset Disconnects Randomly:
- Ensure the headset and adapter are within the 10-meter Bluetooth range.
- Avoid obstacles that may interfere with the Bluetooth signal.
- Check for other strong wireless signals that might cause interference.
- Re-pair the devices if disconnections persist.
9. Specifications
| Feature | Specification |
|---|---|
| Model Name | earphone |
| Connectivity Technology | Bluetooth |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Version | 5.2 |
| Bluetooth Range | 10 Meters |
| Noise Control | Active Noise Cancellation |
| Charging Time | 1-2.5 Hours |
| Battery Life (Work Time) | 5-8 Hours |
| Standby Time | <100 Hours |
| Frequency Range | 20 Hz to 20,000 Hz |
| Connector Type | K plug (2.5mm and 3.5mm) |
| Material | Plastic |
| Item Weight | 0.12 Kilograms (approx. 4.2 ounces) |
| Water Resistance Level | Water Resistant |
| Control Method | Touch / Media Control |
| Manufacturer | Xiamen Radtel Electronics Co.,Ltd |
10. Warranty and Support
This radtel Bluetooth Headset comes with a 1-year warranty from the date of purchase.
For technical support, warranty claims, or further assistance, please contact radtel customer service through their official channels or the retailer where the product was purchased.





