Bluetooth 2.0+EDR, compatible with ALL bluetooth enabled mobile phones Caller ID indicate with large LED lights Voice dial and last number redial Noise suppression and echo cancelation technology AVRCP profile integrated, control the audio playback when used with Bluetooth USB dongle Built-in microphone and built-in dual stereo louderspeaker Built-in FM frequency transmitter connect to your car stereo Universal audio input for audio devices, such as iPods, MP3, MP4 to enjoy wireless stereo listening Stereo earphone provided for total private conversation. FM earpiece is available Wireless parking sensor system is available Easy installation, the mirror simply clips over the top of your existing mirror Bluetooth 2.0+EDR, with both Headset and Handsfree profile. The ALL-One Bluetooth Mirror provides an array of display features (1) Call out, call answer, call reject, call hang up. (2) Caller ID indication, Telephone number of caller is displayed on the mirror (3) Support voice dial. (4) Last number redal. (5) Audio transfer. "Stereo earphone is provided (FM earpiece is optional) For those calls that you'd rather keep to yourself. For total privacy a earphone is provided. Simply place into your ear to ensure your passengers aren't able to over hear your conversation. " "Maximum Sound Quality Not only will minimizes all road noise to ensure high quality communication, it also blocks out echo and radio signal interference. To maximize this even further, you can easily connect the sound it to your car stereo through a built in FM frequency transmitter. " "Wireless Parking Sensor is Optional The system will be on parking sensor state automatically while you put your car in reverse gear. Handsfree function is going on on this state. " "Specifications of Bluetooth Stereo Handsfree Mirror System Standard: Bluetooth 2.0 specification + EDR. Range: 10 metre (clear view). Warranty: 12 months. "