Safe Material: free drinking water dispenser, 304 stainless steel, high density ABS plastic, no toxic, no smell. High Compatibility: The electric pumping device suitable f pure bottled drinking water, suitable f a of models gallon barrel without pry the lid. USB Rechargeable Battery: Built in rechargeable 1200mAh battery. Can used f 30-40 around 4-6 bottles of 5 gallon water full . No need to charge day. Easy to Use: Simply fasten the small pump on the mouth. One switch operation, totally hassle free even elders. Note: This drinking water pump is suitable f gallon barrels with a 2.16-inch (5.5cm) neck. Operating Voltage: DC 3.7V Power Rating: 3.8W Charging Time: 3-4 Hours Charging: -USB Charging Cable Suitable f: 2,3,4,5 Gallon Water Bottles Size: 2.95.1 inch or 7.513cm Hose Length: 21.7inch Pipe Length: 4.7inch Instructions: Connect the silicone hose insert the silicone hose to the . Then fasten the water pump Press the button to pump out the water Press the button again to stop pumping Charge with the -USB cable when out of battery colour: Black and white Material: ABSandstainless steel Package Contents: 1 Water Pump 1 Inlet pipe 1 Outlet pipe 1 -USB Charging Cable Only the above package content, other products are not included. Note: Light different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.