Safe Material: Drinking water dispenser made of 304 stainless steel and high-density ABS plastic, non-toxic and odorless. High Compatibility: Electric pumping device suitable for standard pure bottled drinking water, compatible with various gallon-sized barrels without prying the lid. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Provides power for dispensing approximately 4–6 bottles (5-gallon each), lasting 30–40 uses. No need for daily charging. Easy to Use: Simply attach the pump to the bottle neck. One-button operation, convenient and user-friendly for all ages, including seniors. Note: This water pump is designed for gallon barrels with a 2.16-inch (5.5 cm) neck diameter. Operating Voltage: DC 3.7V Power Rating: 3.8W Charging Time: 3–4 hours Charging Method: USB charging cable included Compatible With: 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 bottle. 2. Securely fasten the water pump onto the bottle opening. 3. Press the button to dispense water. 4. Press the button again to stop the flow. 5. Recharge using the included USB cable when the 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 are not included. Note: Slight color variations may occur due to lighting conditions and screen display differences. Measurement error allowance: ±1–3 cm.