Scratch-proof and wound-proof skin design, R-type blunt angle design, safe shaving without injury to the skin. Copper core strong motor, strong power, low-shock operation, long-term durability. Large capacity lithium batteries have strong power, long endurance and stable trimming. Ceramic knife head is safe, non-jamming, quick trimming is controlled by you. Four-stop limited comb shaving is not pitted and smooth.Five-step fine-tuning of knife head is suitable for various kinds of hair.