1.This manual water pump is easy to install and use, just place the pump on the water pitcher and squeeze it, the water will be pumped out.Innovative vacuum action, easy to pump Use vacuum action to quickly/slowly dispense as much as you want. 2.Our manual water dispenser is different from any other water pump on the market which is a waste of money.Our water bottle pump is well designed, perfect functional product for home, office, camping or other activities. 3. Manual water dispenser without power supply, energy saving, easy to install and easy to use. 4.Compact size and light weight, easy to carry, provide you with a very simple way to drink water. 5.With a convenient around the neck of the water bottle pump, creating a positive seal by quickly and efficiently filling your beverage container.