Safe Material: Drinking water dispenser made from 304 stainless steel and high-density ABS plastic. Non-toxic and odorless. High Compatibility: Electric pumping device suitable for standard pure bottled drinking water. Fits various gallon-sized barrels without requiring lid removal. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Provides enough power for dispensing approximately 4 to 6 bottles of 5-gallon water (about 30–40 uses). No need for daily charging. Easy to Use: Simple installation by attaching the pump to the bottle neck. One-button operation, convenient and user-friendly, suitable for all ages including elderly users. Note: This water pump is designed for gallon barrels with a 2.16-inch (5.5 cm) neck diameter. Specifications: Operating Voltage: DC 3.7V Power Rating: 3.8W Charging Time: 3–4 hours Charging Method: USB charging via included cable Compatible Bottle Sizes: 2, 3, 4, and 5-gallon water bottles Product Dimensions: 2.9 x 5.1 inches (7.5 x 13 cm) Hose Length: 21.7 inches Pipe Length: 4.7 inches Instructions: 1. Connect the silicone hose and insert it into the water bottle. 2. Securely attach the water pump to the bottle opening. 3. Press the button to dispense water. 4. Press the button again to stop dispensing. 5. Recharge using the included USB cable when battery is low. Color: Black + White Material: ABS + Stainless Steel Package Contents: 1 x Water Pump 1 x Inlet Pipe 1 x Outlet Pipe 1 x USB Charging Cable Note: The package includes only the items listed above. Other accessories or products shown are not included. Due to lighting and display differences, the actual color of the item may vary slightly from the image. Measurement allows an error of +/- 1–3 cm.