Automatic water pump Usb charging Can fit on 20L water gallon [One Key Operation]: Portable and lightweight design drinking dispenser bottled water pump provide convenient and healthy appliance for you. Press the button to control water come out. The electric water pump supplies you a easy way to drink water at home , office, school or during travelling. [USB Charging]: Built in 1200mA rechargeable battery, equipped with a USB cable which makes the electric drinking water pump to be fully charged in 5 hours and dispense 5~8 barrels 5- gallon water bottle once fully charged. [Easy to Install]: Automatic electric suction device is very convenient. Just fix, insert and tighten the tube into the bottled water, then press to get start to dispense water. [High Compatibility]: The universal water dispenser perfectly fits screw top jug or bottle with the capacity of 1.2Gal(4.5L), 1.3Gal(5L), (2Gal/7.5L), (2.6Gal/10L), (3Gal/11.3L), (4Gal/15L), (5Gal/19L). [Safe Material]: The shell is made of high quality ABS plastic, lightweight but solid. The water pipe is made of 304 stainless steel, and the hose is made of food quality silicone.