All adapters have been completely tested: Aging Test, Material Test,Over Voltage Test,Over Temperature Test,Safety Test,High functionality low energy consumption Fit model:HC3400 HC3410 HC3420 HC3422 HC3426 HC5410 HC5440 HC5442 HC5446 HC5447 HC5450 HC7452 Colour:black Material:plastic Package Contents: 1 * Hair clipper Only the above equipment content, different merchandise shouldn't included. Note: Light and assorted displays may cause the color of the article within the photo slightly diverse from the real thing. The measurement allowed error is +/- 1-3cm.