Safe Material: Drinking water dispenser made of 304 stainless steel and high-density ABS plastic, non-toxic and odor-free. High Compatibility: Electric pumping device suitable for standard pure bottled drinking water, compatible with various models of gallon water barrels without requiring the lid to be pried open. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Can pump approximately 30–40 times, enough for 4–6 bottles of 5-gallon water on a full charge. No need to charge daily. Easy to Use: Simply attach the pump to the bottle neck. One-button operation, easy to use for all ages, including elderly users. Note: This water pump is designed for gallon 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: 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: Connect the silicone hose and insert it into the water bottle. Secure the water pump onto the bottle mouth. Press the button to dispense water. Press again to stop. Charge 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. Note: Lighting and monitor settings may cause slight color variations between the product image and the actual item. Measurement may vary by ±1–3 cm.