The detachable and washable ceramic blade is easy to clean, and the treated blade angle (unique bevel design) protects the baby's skin from scratches. Precision motor, low vibration, ultra-quiet (silent) design, only about 50 decibels can eliminate working noise, helping children feel relaxed, without worrying about hair problems. The powerful high-power motor (the main shaft is made of thin copper)does not pinch or damage the baby's hair. The main body is made of ABS environmentally friendly materials. Use lithium ion battery, rechargeable, 5 hours full charge for 90 minutes, wireless use can also be rechargeable. Global charger input voltage: AC 100~240V Equipped with 4 accessory guide combs: slim, 3-6 mm, 9-12 mm, 0-12 mm, skin-friendly contour comb making it safe, simple, comfortable and convenient to use. With the 9 mm and 12 mm long protective combs, new mothers can safely cut the baby's hair withoutworrying about making mistakes; with the 3 mm and 6 mm long combs, novice mothers can easily cut the round neck and make the trimming Hair style looks natural. The unique trimming comb is suitable for mothers who just want to thin baby thick hairor trim The whole device is strengthened with IPX-7 waterproof treatment, it can work normally when the body is immersed in water, and it is easy to clean and manage damaged hair.