Model: -F1002 Name: 2.0 channel 100Wx2 stereo BT audio power amplifer Amplifier chip: TPA3116D2 BT version: 5.1 Audio input: BT+AUX+USB disk+USB sound card Audio output: Left channel 100W + right channel 100W Adaptive power supply: DC9-24V, 5A (Do not connect to AC) Adaptive speaker: 20-100W, 3- 80 Volume adjustment: multi-function knob, 360 degree stepless tuning, with volume level indication. Click: play / pause Double click: mode switch (BT, USB flash disk, AUX) Long press for 1 second: on/off Rotate: adjust volume Protection mechanism: Over temperature, over-current, short circuit, anti- static protection Support Wuzhi Audio APP. Modify BT name, password setting, prompt tone volume adjustment, on/off prompt function: tone, llaby, sound effect selection+custom sound effect, USB flash disk playlist,volume indicator brightness adjustment. Size: 60x60x31mm Colour:As shown Material:Plastic + Metal Package Contents: 1 x -F1002 audio amplifier board module Only the above package content, other products are not included. Note: Light 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.