Item NO. VTB-88B1 Bluetooth Hands Free Car kit (rear view mirror) Features: 1. Bluetooth specification:2.0; 2. range:0-:10 m 3. Independent FM wireless earpiece to protect your secrets. 4. 35 seconds record and play function. 5. Super bright LCM caller english name display. 6. plete blue tooth wireless installation DSP technology, full duplex, noise and echo suppression. 7. With 16000mAh Lithium battery to provide typical standby time of more than 169 hours talking 8. Voice dialing, last call redialing,and call switching function. 9. Built-in high intelligent microphone and powerful speaker. 10. Transmit the signal into car radio by FM frequency. 11. USB faucet to software framework update 10 pcs / ctn N.W: 9.3 kg / ctn G.W: 10 kg / ctn 35.5X 32.5X 38.5 cm