Ⅰ. Safe Material: BPA-free drinking water dispenser, 304 stainless steel, high-density ABS plastic, toxin-free and odorless. Ⅱ. Wide Compatibility: The electric pump is suitable for pure drinking water in bottles, suitable for various models of gallon barrels without screwing the lid. Ⅲ. USB Battery: Built-in 1200mAh rechargeable battery. It can be used for 30-40 days or about 4-6 bottles of 5 gallon water when fully charged. No need to charge every day. Ⅳ. Easy to use: Just attach the small pump to the bottle opening. One switch operation, suitable for children and the elderly. Ⅴ. Note: This drinking water pump is suitable for gallon barrels with a neck of 2.16 inches (5.5 cm). Ⅵ. Working voltage: DC 3.7V Ⅶ. Rated voltage: 3.8W Ⅷ. Charging time: 3-4 hours Ⅸ. Charging: USB charging cable Ⅹ. Suitable for: 2.3,4.5 gallon water bottle Ⅺ. size: 2.9 * 5.1 inch / 7.5 * 13cm Ⅻ. Hose length: 21.7 inch XIII. Tube length: 4.7 inch XIV. Instructions: Connect the silicone hose and insert the silicone hose into the bottle. Then attach the water pump. Press the button to pump out water. Press the button again to stop pumping. Charge with micro-USB cable after removing the battery. XV. Color: Black + White XVI. Material: ABS + stainless steel XVII. Package Contents: 1 * Water Pump, 1 * Inlet Pipe, 1 * Outlet Pipe, 1 * USB Charging Cable. Only the above package contents, other products are not included. XVIII. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.