Water Bottle Pump USB Charging Automatic Electric Water Dispenser Pump Bottle Water Pump Auto Switch Drinking Dispenser|Water Dispensers Features: 1. Designed to care for the elderly and children, easy to install, drink water with one click 2. Designed with safe material, no toxic and no smell, 304 stainless steel water outlet, health and environmental protection 3. Suitable for pure bottled drinking water, a variety of models gallon barrel with 2.16-inch (5.5cm) neck 4. Built in USB rechargeable 1200mAh battery, can be used for 30-40 days or around 4-6 bottles of 5 gallon water once full charged 5.The water dispenser turns off automatically every 60 seconds working, more safe and smart Installation Suggestion: 1. If your bottle is the standard gallon barrel, please don't remove the bottle cap when you install the water dispenser 2. If your bottle is the ordinary barrel, please open a hole on the bottle cap, then install the water dispenser in the hole Thanks very much