1.Decoding support MP3, WMA, WAV, FLAC, APE lossless format music 2.Power 2*40W, can connect 2 40W speakers at the same time 3.voltage range 7V-25V, current can not be less than 2A 4.support for Bluetooth call function, Bluetooth version 5.0 5.Support the recording function support folder switching function support SD interface support for USB interface (U disk) power failure memory function support for 10 meters distance infrared remote control operation support for external audio input LINE IN support for radio FM, collector frequency band (87.5MHZ-108.0MHZ) keys:six keys multi-directional control, REC / REPEAT / - / + / Colour:Black Material:PCB Package Contents: 1 x 2*40W Amplifier Bluetooth kit 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.