Safe Material: BPA-free drinking water dispenser made of 304 stainless steel and high-density ABS plastic, non-toxic and odorless. High Compatibility: The electric pumping device is suitable for pure bottled drinking water and fits a variety of gallon barrel models without needing to pry off the lid. USB Rechargeable Battery: Equipped with a built-in rechargeable 1200mAh battery. It can be used for 30-40 days or approximately 4-6 bottles of 5-gallon water once fully charged. No need to charge daily. Easy to Use: Simply attach the small pump to the bottle neck. One-switch operation makes it completely hassle-free, even for children and the elderly. Note: This drinking water pump is compatible with gallon barrels that have a 2.16-inch (5.5 cm) neck. Operating Voltage: DC 3.7V Rating: 3.8W Charging Time: 3-4 Hours Charging: USB Charging Cable Suitable for: 2, 3, 4, 5 Gallon Water Bottles Size: 29*51 inch/75*13 cm Hose Length: 21.7 inch Pipe Length: 47 inch Instructions: Connect the silicone hose and insert it into the bottle. Then attach the water pump. Press the button to pump water and press it again to stop. Charge with the USB cable when the battery is low. Color: Black + White Material: ABS + Stainless Steel Package Contents: 1 * Water Pump, 1 * Inlet Pipe, 1 * Outlet Pipe, 1 * USB Charging Cable Only the above package content; other products are not included. Note: Lighting and different displays may cause the item's color in the picture to differ slightly from the actual product. Measurement error is allowed within +/- 1-3cm.