Model: 1002S Bluetooth version: 5.1 Power output: 100Wand100W ( power) Audio input: BluetoothandAUXandUSB Power supply: DC 9-24V or 5A or above U disk format: FAT32, Less than 32GB U disk music support format: WAV or FLAC or APE or MP3 Whether to support APP control: Yes Left and right channel output power: 2x10W 8 or 12V 2x30W 8 or 24V 2x20W 4 or 12V 2x50W 4 or 21V 2x70W 4 or 24V 2x100W 2 or 21V Protection mechanism: overvoltage overcurrent undervoltage clipping short circuit overheating and other protections Multi-function knob: 1. Single click: Pause or play 2. Double click: next song 3. Triple click: previous song 4. Quadruple click: switch input mode (Bluetooth or AUX or USB) 5. Five clicks: restore factory settings 6. Long press: power on or off Product size: 95x60x23mm Colour:Black Material:ABS type:B: With Line Package Contents: 1 x Bluetooth Amplifier Board 1 x AUX extension line 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.