Main Features:
1. Support 500m range full duplex talking
2. Auto switch seamlessly among the Bluetooth mobile phone, intercom and stereo, or FM radio
3. Mobile phone has the highest priority, automatically switch to mobile phone when incoming call, self restore back to intercom after you hang up
4. Answer, reject, hang up, and call functions supported
5. Support the last number redial
6. Support Voice dial
7. Sharing the music form the mobile phone or connecting with GPS audio through A2DP.
8. Support music play, pause, playback and forward control through AVRCP
(Optional FM radio frequency function covers 76~108MHz.)