1.Touchless infrared sensor eliminates cross-contamination risks. Customize foam volume (0.02-0.18 oz per use) with a simple dialideal for , heavy-duty cleaning, or gentle handwashing 2.Refill less with a large 500ml tank. Built-in 500mAh battery charges fully in 3 hours via USB-C (cable included) and lasts weeks on a single charge. IPX5 waterproof design survives spills and bathroom humidity 3.Dilute foam soap, hand sanitizer, shampoo, or dish detergent with water (1:3-5 ratio) to create rich lather. Note: Undiluted liquids clog the pump 4.Mount securely on walls (heavy-duty stickers included) or place on countertops. Pro tip: Wait 30+ mins after sticking for maximum adhesion