Support 220V current inputSeparate adjustable high and low tonesWith optical audio inputLow heat generation and long service lifeUse of multiple audioCar Bluetooth digital amplifier board with optical audio inputOutput power:220VPower supply voltage: DC12 24VPlug Type :EU Plug,it applies to Indonesia, Germany, France, , Italy and so on.Colour:blueMaterial:PCBSize:15.5 x 4.5 x 5cmPackage Contents:1 x amplifier version1 cable1 x remote control1 x speaker cable1 x DC cableOnly 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 + 13cm.