Bluetooth audio amplifier Product model: XY-D15H Power supply: DC 8-24V/3A Bluetooth version: 5.1 Audio input: Bluetooth+AUX+U disk USB decoding: WAV FLAC APE MP3 Left and right channel output power: 2*10W @ 8/12V, 2*20W @4/12V, 2*15W @8/16V, 2*20W @ 8/24V Protection mechanism: protection against overvoltage, short circuit, overheating, overcurrent, etc. Remote control function: Xinyilian APP Lighting mode: volume mode + colorful mode 1 + colorful mode 2 Product size/weight: 52mm x 52mm x 32mm/43g Colour:Black Material:abs Package Contents: 1 x Audio digital amplifier board 1 x DC adapter 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.