EasGear Wireless In-Car Bluetooth FM Transmitter with Charging Hands-Free Calling Built-in Microphone, wirelessly transmit phone call and music from Bluetooth mobile phone USB charging for two devices at the same time, output DC 5V,2A, for smartphones and tablets Built-in FM transmitter, full frequency: 87.5-108MHZ USB socket support U Disk to play music in your car speaker Compact, lightweight and simple design