Compact design for safe driving--Built-in microphone frees your hand for calling. Easy to answer/hang up/reject a call/redial the last number/adjust volume via the multifunctional button.【Note: To use this device, please press the Call Button for 2s and press the next and previous button to adjust FM frequency.】
Three Music Play Modes-- 1.Play music from Bluetooth-enabled devices via FM signal; 2.Stream music from TF card(up to 32GB), supporting music files like MP3, WMA; 3.Transmit music from USB flash disk(up to 32GB).
Dual USB Ports--One is for USB music playing; the other 5V/2.1A USB charging port efficiently gets your IOS or Android device fully charged. Enjoy in-car stereo streaming and charge your smart device at the same time.
Wide Compatibility and Aux Output--Featuring Bluetooth 4.1 technology. It is compatible with iPhone, iPad, iPod, tablet, and Android smart-phones.【Note: The Aux Out Port can not stream music from mobile phone, it is used for connecting with your car stereo.】
Car Battery Voltage Display--The FM transmitter will display car voltage when plugged into the car cigarette lighter. Enable you to know your car battery state easily. Then it will enter automatic play modes.