Fine Tuning Knob 5 Combs To Adjust(0.8-2.0mm) Control The Length Of The Hair Meet Your Different Need. Adjustable Limit Comb Let You Easily To Style Your Hair. It Could Be Used For Cutting Hair Or Beard Trimmer. The Whole Product Is Not Waterproof Mute Design/noise Lower Than Similar Products Streamlined Modeling/bast Ergonomic Design Moving Blade Adjustable For Cutting Length From 0.8mm To 2.0mm Used Wirelessly Convenient To Operate Safely Switch-lock Avoid Unwanted Operation Ultra Thin Heads With Slots To Shave Long Hair And Short Set Stubble Professional High Quality Advanded Shaving System