Power supply requires a current of tens of A, please use thick wires to avoid loss of power supply.Size: about 9.2x9.6x5.2cmMaterial:Metal + Plasticcolour:As shownPackage Contents:1 * Amplifier Boost Power BoardOnly the above package content, other products are not included.Note: Light shooting 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.