All adapters were completely tested: Aging Test Material Test Over Voltage Test Over Temperature Test Safety Test High performance low energy consumption size: 5cm extensive Material:plastic colour:black Package Contents: 1 * restricted comb Only the above equipment content, different item will not be included. Note: Light and diversified exhibits may cause the colour of the item within the picture just a little various from the genuine thing. The size allowed error is +/- 1-3cm.