Tdkfdswdoa Specification:Input power: 1 - 3WVoltage: DC48 - 53VCurrent: 35AMaterial: Metal+Plasticcolour: purple+blackPackage Contents:1 Amplifier BoardOnly 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.