USB sensor soap dispenser Power and charging: powered by a 1500 mAh lithium battery; USB charging with the included USB cable; designed for longlasting performance Battery life: one charge can provide up to three months of use Touchless operation: infrared sensor enables soap dispensing within 0.25 seconds of detecting a hand; hygienic, hands experience Activation and performance: infrared startup method with a 0.25 second response time Versatile use: suitable for bathrooms, hotels, public restrooms, hospitals, and schools; appropriate for both children and adults for hand washing, hair washing, bathing, and dishwashing Dispensing and waterproofing: three levels of liquid dispensing adjustable as needed; IPX6 waterproof rating Size and capacity: dimensions 160 x 140 x 77 mm (6.29 x 5.51 x 3.03 in); capacity 300 ml; compact enough for most bathroom countertops or sinks