Safe materials: free drinking water sprayer, 304 stainless steel, high-density ABS plastic, no toxic and no odor.High compatibility: The electric pump device suitable for pure bottled water, suitable for one of the models gallon barrels without prying the lid.USB rechargeable battery: Built-in rechargeable 1200mAh battery. Can be used for 30-40 or about 4-6 bottles of 5 gallon water full. No need to charge daily.Easy to use: Simply fasten the small pump to the mouth. One-button operation, completely hassle-free even for children and the elderly.Note: This drinking water pump is suitable for gallons with a 2.16-inch (5.5 cm) neck.Operating voltage: DC 3.7VPower: 3.8WCharging time: 3-4 hoursCharging: -USB charging cableSuitable for: 2,3,4,5 gallon water bottlesSize: 2.9*5.1 inches/7.5*13cmHose length: 21.7 inchesPipe length: 4.7 inchesInstructions:Connect the silicone hose and insert the silicone hose into the bottle. Then attach the water pumpPress the button to pump out the waterPress the button again to stop pumpingCharge with the -USB cable when the battery is lowColor: 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 allowed measurement error is +/- 1-3 cm.