1、There is infra-red motion sensor set in the SmartHandwasher, so you could put your hands in front of the infra-red sensing area to get the bubble without pushing the button. The using is very interesting and easy for making you fall in love with washing hands! 2、Put your hands on different height to get the suitable bubble volume according to your palm size and the degree of stain. 3、Featured with IPX5 waterproof, you could put it in your bathroom or kitchen and no need to worry it stop working after reaching the water. 4、SmartHandwasher is created to withstand the test of time. Once charged, it could work for you more than 3000 times. Features: There is infra-red motion sensor set in the SmartHandwasher, so you could put your hands in front of the infra-red sensing area to get the bubble without pushing the button. The using is very interesting and easy for making you fall in love with washing hands! Put your hands on different height to get the suitable bubble volume according to your palm size and the degree of stain. Featured with IPX5 waterproof, you could put it in your bathroom or kitchen and no need to worry it stop working after reaching the water. SmartHandwasher is created to withstand the test of time. Once charged, it could work for you more than 3000 times. Specifications: Product size: 70x98x215mm Product Net Weight: 264g Working Temperature: 5 ~ 40℃ Working Humidity: 0 ~ 95% RH Working Life: ≥ 5000 times Rated Voltage/Power: 3.7V/ 2.6W Charging Voltage: DC 5V 0.8A Waterproof Level: IPX5 Induction Distance: 0~6 CM Single Liquid Output: ①1.0g (high grade) ②0.6g (low grade) Bottle Capacity: 300mL Model:OH-ASD1 Package List: 1 * Hand washer 1 * Hand washer