Bluetooth V1.2 or V2.0+EDR, 100meters or 500 meters wireless communication range. Support Bluetooth headset Profile (HSP), hand-free profile (HFP), advanced audio distribution Profile (A2DP) and audio video remote control Profile (AVRCP), intercom and Text To Speech (TTS) technology. It can simultaneously connect up to 4 devices, the mobile phone, GPS or the stereo, another two Bluetooth intercom headsets. It''s an effective solution for the man when he is wearing a helmet and can''t receive the call, listen to the music or communicate with the teammates..

Main Features:

1. Support 100m or 500m range full duplex talkback

2. Auto switch seamlessly among the Bluetooth mobile phone, intercom and stereo music

3. Mobile phone priority, automatically switch to mobile phone when incoming call, self recover intercom when you hang up

4. Answer, reject, hang up, and call out functions supported

5. Support the last number redial, voice dial

6. Support audio transfer

7. Sharing the music form the mobile phone or connecting with GPS audio through A2DP

8. Support play, pause, playback and forward music through AVRCP

9. With DSP noise suppression and echo cancellation to ensure the clear voice quality when speeding along the highway

10. Optional TTS with 8 languages(100meters available)

11. Optional FM radio frequency function covers 76~108MHz