CONVENIENCE : No heavy lifting of water cans & hence ideal for women/ senior citizens. APPLICATION : Fits standard Bubble top cans in Home, Office, School, Factory or Hospital etc., INNOVATIVE : waterproof silicon capped button dispenses water in single press Power : rechargeable lithium battery works during powercut. Charge battery for 1hour before first use ELEGANCE Food grade silicon tube is developed exclusively for longer usage. DC adapter is safe to use and consumes negligible electricity. The one touch button is also covered with Silicon for your Safety