E-PRANCE Bluetooth In Car Use FM Transmitter with Hands-free USB Port for Cellphone Charging Multi Channels -White Color Six FM Channels: 87.9/88.1/88.3/88.5/88.7/88.9MHZ Support Hands-free: You can connect your cellphone to the transimitter,and answer the phone call through built-in Microphone USB Port: Charging your cellphone or iPod (Charging Cable not included) Bluetooth V2.1 + EDR Class 2 Wireless,compatible for most of smart phone