Description:-Bluetooth hands-free talking and FM radio functions-High quality sound with D.S.P solution for echo cancellation and noise suppression-Automatically converting between calling and music playing， also last memory-You can directly control MP3 player by the button for picking up / hanging on or change FM-Supports micro SD / SD card / USB for playing music-Can connect with two Bluetooth devices at the same time-Powered by car charger for MP3 player and CR2032 battery for controller (included)-Suitable for all the audio devices with BluetoothFeatures:-Color:Gold-Size:about 11.5 x 5.5 x 3.0 cm-Bluetooth version: V2.1+EDR-Bluetooth audio process: A2DP (playback)-Bluetooth transmission range: 10M-Microphone range: 0.5-2m-Supports format: MP3 / WMA-FM transmission frequency: 87.5-108MHz-Frequency respond: 20Hz-15KHz-SNR: More than 60dB-Degree of distortion: Less than 0.1%-Rated voltage: 12V-Rated current: 90mA-Limit voltage: 9-26V-Power consumption: 1WPackage include:1xCar FM Modulator Bluetooth MP3 Player1x21 Keys Remote ControllerUse Instructions