Features: Bluetooth-compatible hands-free calling and Bluetooth-compatible support external for touch keys (Optional need to increase costs) Support folder choose to for play (remote control operation) - easy to choose to for play different music category card / U disk in the music category to put a different folder, DJ music / background music / songs, long press on or in playback mode next song, you can select the folder to for play (at the same for time there will be F001, F002 on the screen) Support USB / card / Bluetooth-compatible / FM / AUX switch automatically. Tips and conversion to cable (signal sound or voice in English optional) Support MP3 / WMA / WAV format music. MP3 songs 32-320kbps, WAV / WMA is: 1411kbps or less Support USB / card switch, the song, the next song, volume control, EQ, for play / pause, stop, mute, shutdown, direct election songs. Support Bluetooth-compatible Bluetoot one, the next song, volume control, for play / pause, mute. Support the power and memory function: memory off before the song played and the volume can be memorized to the current point. Breakpoint memory (in playback mode withdrawn U disk or SD card the first for time in about three seconds off the power again will the breakpoint memory for play) Previous button (volume down): Short press in the MP3 state for the previous song, long press for the volume to decrease; short press for the up one in the FM state; short press for the Bluetooth-compatible function One song, long press for the volume to decrease. for Play/Pause: Short press to for play/pause in MP3 state; short press to for play/pause in FM state, long press to automatically receive and save the station; short press to for play/pause under Bluetooth-compatible function. Next button (volume up): short press for the next song in MP3 state, long press for volume increase; short press for one station number in FM state; short press for Bluetooth-compatible under Bluetooth-compatible function One song, long press for the volume to decrease. MODE button: Switch between USB / SD / FM / audio input / Bluetooth-compatible function. Specifications: Storage Type:Flash Memory Function:FM Radio Body Material:PLASTIC Size:8.3x2.8cm (3.3x1.1in) Notes: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1 x Decoder 1 x Surface for Shell 1 x Remote Control