1.USB charging is very convenient. You can charge for anytime and anywhere. 2.Silent operation allows you to enjoy a quiet and comfortable environment and prevent dry skin. 3.Easy to carry anywhere,and also suitable for home,car,bedroom,office. 4.Nano-molecules moisturize the skin and make it more fully hydrated. Let's have a moisturizing water mist massage. 5.The cute shape can enjoy the happiness brought by vision while skin care.