1. Support 100m and 500m range full duplex talkback to be select
2. Auto switch seamlessly among the Bluetooth mobile phone, intercom, stereo and the FM radio
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
11. Optional FM radio frequency function covers 76~108MHz
12. Optional Build-in PMR function to control the PTT, be able to communicate with the crowds far away from 2 kilometers
13. Bluetooth intercom adapter is optional, to bring about communicating with the crowds far away from 5 kilometers