1. Safe Material: free, Food grade silicone hose, high density ABS plastic shell. 2. USB powered: Rechargeable battery, can be used to pump out 4-6 water if fully . 3. Fits All Standard Size Bottle: Standard size is 2.16 Inch (5.5cm) neck size, fits for 2, 3, 4, 5 gallon and other standard size water bottle. 4. Extensive use: Portable device for both indoor and outdoor use like office, home, Kitchen, camping, picnic, activities, etc 5. The water pipe is about 0.5 meters long,Easily reach the bottom of the barrel Instructions: 1. Connect the silicone tube and stainless steel tube 2. Insert the silicone hose to the bottle. Then fasten the pump 3. Press the button to pump out the water 4. Press the button again to stop pumping 5. Charge with the Micro-USB cable when out of battery Colour:Beige-Yellow Material:Silica gel+ABS+PC Size:8.5x12.5cm Package Contents: 1 * Water Dispenser Pump Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.