Features:-It reacts quickly, just put your hand under the nozzle and foam will come out within 0.25 seconds (mix detergent and water in a ratio of about 1:4, and it will automatically produce dense foam).-It has 4 adjustable foaming levels, which can be set to 0.4/0.8/1.5/2.0 seconds. There is an LED light display on the top, and the number of lights on indicates the corresponding gear.-Built-in 500mAh rechargeable battery, fully charged in just 3 hours, with a battery life of over 60 days. The top right LED light shows the battery status.-The capacity is 400ml, and there is no need to refill frequently. The transparent and visible design makes it easy for you to check whether refilling is needed.-Widely used in kitchen, bathroom, toilet, restaurant, nursery.