Bluetooth V2.0+EDR, 500 meters transmission range, support Bluetooth intercom, hand-free function. Its more securely and more smoothly for polices to communicate with others in real time while executing the task. This kink of intercom is able to connect the GPS or stereo, and other two Bluetooth intercom synchronously.

Main Features:

1. Support 500m range full duplex talkback

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

3. Interphone priority, automatically switch to Interphone even calling or receiving FM radio

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

5. Support the last number redial, voice dial

6. Support audio transfer

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