1. Support 100m and 500m range full duplex talking
2. Auto switch seamlessly among the Bluetooth mobile phone, intercom, stereo and the FM radio
3. Mobile phone has the highest priority, automatically switch to mobile phone when incoming call, self recover intercom after you hang up
4.Answer, reject, hang up, and call out functions supported
5. Support voice dial
6. Support the last number redial
7. Support audio transfer
8. Sharing the music form the mobile phone or connecting with GPS audio through A2DP.
9. Support music play, pause, playback and forward, backward control through AVRCP
10.  With DSP wind noise suppression and echo cancellation to ensure the crystal clear voice quality when speeding along the highway
11. Optional TTS with 8 languages
12. Optional FM radio frequency function covers 76~108MHz
13. Optional Build-in PMR function to control the PTT, be able to communicate with the crowds far away from 2 kilometers
14. Bluetooth interphone adapter is optional, to bring about communicating with the crowds far away from 5 kilometers