1. Near-field infrared induction bubble generation in 0.25 seconds, no need to press to avoid fully updated touch and bubble generation automatic, convenient and fast2. charge once, use up to 10800 times, 2000mah large capacity lithium battery, long standby time up to 3-6 months3. smart charging, convenient and environmentally friendly, no need to disassemble, reducing the second damage to the life of the body4. rechargeable, economicalSpecification:Material: plasticSize: 188 * 98mm / 7.4 * 3.86 "Internal diameter: 30mm / 1.18 "Color: White/Green/PinkUse crowd: children, adults wash hands / wash hair / bath / wash dishesUsage environment: sink / bathroom / hotel / public toilet / hospital / school, etc.