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 gallon-sized barrels without requiring the lid to be pried open. USB Rechargeable Battery: Built-in 1200mAh rechargeable battery. Provides operation for 30-40 uses, approximately 4-6 bottles of 5-gallon water. 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 bottles 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 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 to the bottle neck. 3. Press the button to dispense water. 4. Press the button again to stop pumping. 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: Lighting and monitor settings may cause slight color variations between the product image and actual item. Measurement may vary by +/- 1-3 cm.