Safe Material: BPA free drinking water dispenser, 304 stainless steel, high density ABS plastic, no toxic, and no smell.High Compatibility: The electric pumping device suitable for pure bottled drinking water, suitable for a variety of models gallon barrel without pry the lid.USB Rechargeable Battery: Built in rechargeable 1200mAh battery. Can used for 30-40 days or around 4-6 bottles of 5 gallon water once full charged. No need to charge every day.Easy to Use: Simply fasten the small pump on the bottle mouth. One switch operation, totally hassle free even for kids and elders.Note: This drinking water pump is suitable for gallon barrels with a 2.16-inch (5.5cm) neck.Operating Voltage: DC 3.7VPower Rating: 3.8WCharging Time: 3-4 HoursCharging: -USB Charging CableSuitable for: 2,3,4,5 Gallon Water BottlesSize: 2.9*5.1 inch/7.5*13cmHose Length: 21.7inchPipe Length: 4.7inchInstructions: Connect the silicone hose and insert the silicone hose to the bottle. Then fasten the water pumpPress the button to pump out the waterPress the button again to stop pumpingCharge with the -USB cable when out of batterycolour: Black + whiteMaterial: ABS+stainless steelPackage Contents: 1 * Water Pump1 * Inlet pipe1 * Outlet pipe1 * -USB Charging CableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.