All adapters have been fully tested: Aging Test, Material Test,Over Voltage Test,Over Temperature Test,Safety Test,High efficiency low calories 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 should not included. Note: Light and various exhibits could cause the color of the item in the photo a little bit different from the real thing. The size allowed error is +/- 1-3cm.