Self Hair Cutting SystemBesides, it comes with different size guide combs to help you to adjust to the proper height. Now you can easily trim hair perfectly even if you are green hand. Ergonomics DesignErgonomic handle of hair clippers, which is fitted to ensure a comfortable and secure grip. R-type blunt angle design of blade prevents from accidentally hurting skin. Intelligent LCD Display can accurately show rotating speed, battery capacity, charge alert, and oil alert. Ceramic bladeThe movable ceramic blade will not get rusty for long term cutting performance, sharpness and durability.hair clippers can effectively prevent skin irritation from the blade and give you a smoother cutting performance without stuck. Quiet Operation Hair Clippers superior rotating motor provide enough power to fast trimming your hair and cut through very smoothly. But low-vibration, precision motor ensures whisper-quiet operation and won't scare your babies, make your kids and babies feel at ease, not afraid haircut any more.