1.Wireless connection, built-in microphone, FM. Transmitter + USB charger + MP3 player 2.Support hands-free phone calls, built-in microphone. Noise Cancellation Technology Enables Crisp, Clear Phone Calls and Music 3.With FM transmitter function, support adjustment. The frequency covered 87.5-108.0 MHz 4.Allows you to accept MicroSD cards and play music in MP3 / WMA Forma 5.It comes with 2 USB charging ports (5V / 3.1A and 1.0A) to charge your smartphone.
