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 water barrels without requiring the lid to be pried open. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Provides enough power for dispensing 4 to 6 full 5-gallon water bottles (approximately 30-40 uses). No need to charge daily. Easy to Use: Simply attach the pump to the bottle opening. One-button operation, convenient and user-friendly for all ages, including elderly users. Note: This water pump is designed for water barrels with a 2.16-inch (5.5cm) neck diameter. Operating Voltage: DC 3.7V Power Rating: 3.8W Charging Time: 3-4 hours Charging Method: USB charging via included cable Compatible With: 2, 3, 4, and 5-gallon water bottles Size: 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 fasten the water pump to the bottle neck. 3. Press the button to dispense water. 4. Press the button again to stop dispensing. 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 shown are not included. Note: Slight color variations may occur due to lighting and screen display differences. Measurement error allowed within +/- 1-3 cm.