Safe and Healthy Materials: The gallon pump is made of plastic material and comes with food-grade silicone hose. BPA free, non-toxic and odorless. Just attach the small pump to the mouth of the bottle. One-button operation makes it easy for children and the elderly HIGH COMPATIBILITY: The gallon water dispenser is compatible with 2, 3, 4, 5 GAL universal water bottles with 2.16 inch (55mm) neck. If the bottle comes loose, put the lid on so it doesn't come loose. USB rechargeable battery: Built-in 1200mAh rechargeable battery. A full charge lasts 30-40 days or approximately 4-6 5-gallon bottles of water. No need to charge every day. Easy-to-use water dispenser three-button operation: First button: Press to start pumping, press again to stop pumping. Second button: Press to start pumping, and it will automatically stop after 40 seconds. Third button: Press to start pumping, and it will automatically stop after 80 seconds. Improved foldable design: The water dispenser adopts a foldable design, which can keep the water outlet clean and bring you more hygienic and safer drinking water. It is also more convenient to store and carry. Various Scenarios: The portable water dispenser is suitable for home, kitchen, living room, office, camping, travel, etc. Material: plastic colour: black Package Contents: 1 x water pump 1 x USB cable 1 x hose 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.