USB Rechargeable Battery: Built-in 1200mAh battery. After fully charged, it can be used for 30-40 days or about 6-8 buckets of 5 liters of water. You don't need to charge it every daySafe and Healthy Materials: The electric drinking water pump adopts food-grade silicone hose, 304 stainless steel outlet pipe and durable PP material body. BPA-free drinking water pump, odorless and non-toxic. Built-in silicone sealing ring effectively prevents water leakage.Easy to install: Just insert the hose into the bottled water and tighten it. One-button smart operation, low noise, no drilling required, easy to use for children and the elderlyHigh Compatibility: Suitable for pure bottled drinking water, suitable for various gallon bucket models, no need to pry off the lid. Removable tube design, easy to cleanWide Application: The water bottle pump is perfect for home or office use. Small and lightweight design, easy to carry, suitable for camping, picnics, children's sports events, beach days and barbecues.