Support folder playback.Support call/support recording (outside recording). Recording only supports operation in TF mode or USB mode.Support -off memory (support last mode and volume memory.The supply voltage: 5V, and the current is between 0.5-2A.Can be directly connected to speakers, with amplifier and decoding functions.Support song format MP3/WMA/WAV/APE/FLAC, Main functions MP3/USB/TF/LINE IN/FM/BLUETOOTH/remote control/DC12VThe Bluetooth version is version 5.0. 6W, true stereo two-channel. (2*3W). Size 108x25MM Single weight: 40GKey operation introduction:1. VOL-button (previous song/volume down): in MP3 state, VOL-short press is the previous song, long press is the volume down;In the FM state, a short press is to increase a station number; in the Bluetooth function, a short press is for the previous bluetooth song, and a long press is for the volume to decrease.2. PAUSE/PLAY button (play/pause): short press PAUSE/PLAY in MP3 state to play/pause; in FMIn the state, short press to play/pause, short press to automatically close and save the station; short press to play/pause under the Bluetooth function.3. VOL+ button ( song/volume up): in MP3 state, short press VOL+ for the song, long press for volume up;In the FM state, short press is to lower a station number; in the Bluetooth function, short press is the song of Bluetooth, and long press is to decrease the volume.4. MODE button: switch between USB / TF / FM / audio input / Bluetooth function in turn.Description of call/recording function1. Press and hold the MODE button for 2 seconds to start recording, press and hold the MODE button again for 2 seconds to cancel the recording and play the current recording file;2. In recording mode, you need to connect a storage device: U disk or TF card. (Recording only supports USB/TF mode)3. When there is an incoming call, long press the pause button to answer the call.Colour:blackMaterial:PCB+Plastic+MetalPackage Contents:1 x decoder board4 x cables1 x remote control (without button battery)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.