1、Easy to Switch, Multiple Formats Supported: Bluetooth MP3 decoder board supports USB, memory card, Bluetooth, FM switching between switching. Support MP3 WMA WAV FLAC APE format music. 2、USB and Memory Card: Bluetooth MP3 decoder board supports USB and memory card switching, previous, next, volume adjustment, playback or pause. 3、Bluetooth Function: Bluetooth 3 sound decoder module supports Bluetooth previous, next, volume adjustment, play or pause, mute. 4、Power Off Memory: MP3 decoder board supports power off memory function, which can remember the songs and volume played before the power off to the current point. 5、Serial Communication Control: MP3 decoder board supports serial communication control, mode, volume, song selection, stop or play, loop selection. 1 x Bluetooth MP3 Decoder Board1 x Power Cord1 x Horn Cable Item Type: Bluetooth MP3 Decoder BoardMaterial: ABSPanel Size:Length: Approx. 8.5cm/ 3.3inHeight: Approx. 2.4cm/ 0.9inDepth: Approx. 2.4cm/ 0.9inWorking Voltage: 5VWorking Current: 1.5A-2APower: 4 Ohms 3W+3WSound Output: 3P OUT Sound Output (When the External Power Amplifier Is Used, The Module Must Be Powered by a Separate Independent Power Supply)Screw Mounting Hole Spacing: Approx. 7.5cm/ 3.0inBluetooth: Bluetooth 5.3