Steering Wheel Bluetooth handsfree speakerphone Car MP3 player FM transmitter Steering Wheel Bluetooth Car Mp3 player with wireless earpiece Built-in FM Transmitter(88.1-107.9MHz) Adopt 2.4G third generation CSR Bluetooth version and transmitting distance is beyond 8M, Support HSP, HFP, A2DP and AVRCP function Display incoming phone number and voice reminding, built-in speaker and rechargeable battery Adopt digital transmitter technology to eliminate ouside noise