Brand: WiindStone - Model: BT728 - Bluetooth V2.0 + EDR compatible with Bluetooth V1.2 - Caller ID indicate on 3.5" TFT display support English name display - Voice dial and last number redial - Noise suppression and echo cancellation technology - AVRCP profile integrated control the audio playback when used with Bluetooth stereo mobile phone or Bluetooth USB dongle - Built-in microphone and built-in stereo louder speaker - Built-in FM frequency transmitter connect to your car stereo (87.7 87.9 88.1 88.3 88.5 88.7 88.9MHz) - Universal audio input for audio devices - FM earpieces is availableit provided for total private conversation - Working voltage: DC 9~15V - Power consumption: 4W - TFT resolution: 320 x 240Pixels - Packing List: - 1 x Rearview mirror (20cm-Cable length) - 1 x Car charger (190cm-Cable length) - 1 x Audio cable (Extended length: 130cm) - 1 x Fuse - 1 x English manual