1. Safe MaterialBPA free, Food grade silicone hose, high density ABS plastic shell. And the nwe button is directly plugged manually, which is convenient for operation. It is beneficial for children to accidentally press the button to get out of the water and prevent children from slipping and falling. 2. USB powered Rechargeable battery, can be used to pump out 4-6 water jugs if fully charged. 3. USB Rechargeable water dispenser pump with rechargeable large capacity battery inside. Can be used for 30-40 days or around 6-8 bottles of 5 gallon water once full charged. No need to charge every day. 4. Fits Standard Size BottleStandard size is 2.16 Inch (5.5cm) neck size, fits for 2, 3, 4, 5 gallon and other standard size water bottle.Extensive use,Portable device for both indoor and outdoor use like office, home, Kitchen, camping, picnic, activities, etc 5. Easy to Use Press the button to pump out the water. Press the button again to stop pumping. water jug dispenser is easy to operate and totally hassle free even for kids and elders.