Ultrasonic technology: Facial Cleansing Brush can effectively clean dirt, grease and cosmetic residues at 12,000 times/minute of ultrasonic vibration, and improve your skin. Four gear adjustment: 4 levels of adjustment from weak to strong (tap +/- to adjust gears)! 1-2 level gentle mode (suitable for sensitive skin), 3 level (daily mode), 4deep mode (suitable for oily skin)! Multifunctional design: 3 kinds of silicone brush areas provide different cleaning effects for the whole faceThe bottom of the brush can effectively help absorb skin care productsThe back of the brush can be used as a massager for the entire face to relieve fatigue, tighten the skin and reduce fine lines . Silicone material: Food-grade silicone material, it provides the softest and gentlest facial cleansing, safe and non-irritating to all normal, dry, sensitive and oily skin types! Durable & mini: IPX7 full body waterproof, designed with efficient and durable USB power cord. After being fully charged, it can run for several weeks. And can use mobile power, PC and other charging devices for charging.