This is a new MP3 Player FM Transmitter Hands-free Car Kit Charger、 which support USB driver and Micro SD card and can automatically play and transmit the MP3 files of USB driver and Micro SD card after matched with your radio by the frequency. which can offer your  wonderful music、 and it has two USB charging port to charge your portable devices.With this product、 you can greatly enjoy the musicIt is perfectly suitable for the car owners.Features:With multi-function remote control、Can realize number song selection and choose frequency. Support multipoint connections: can connect two phones at the same time.Built-in FM transmitterSupport USB disk and Micro SD card、 support TF cardExcellent voice quality、 use the DSP (digital signal process) technology to echo cancellationWith 3.5 mm line-in jack、 support external audio devicesDual USB charging ports for charging iPod/iPhone、 Samsung、 iPad、 Nokia and other mobile devices(Output 5V/2.1A)Support 12-24V voltage from the car cigarette lighterDescription:Size: 8.0 x 7.0 x 3.2cmPackage weight: 65gThe audio cable length: 70cmFrequency range: 87.5-108.0MhzOutput Frequency: 20Hz-15KHzSupply voltage: 12-24VRated current: 90mAPower consumption: 1WWork temperature: 0-50 degreesSupport file format: MP3/WMAUSB Charge output: 5V/2.1AMusic format: MP3 formatUSB Maximum support: 32GMicro SD Maximum support: 32GTransmit distance: 10mOperating system: Win XP/Win vista/Win7SNR¨R60dB¡¡Package include:1 x MP3 Player FM Transmitter Hands-free Car Kit Charger1 x Audio cable1 x User Manual1X Remote controller