USB RECHARGEABLE & LONG-LASTING BATERRY: The electric water pump comes with a USB rechargeable 1200 mAh Li-Ion battery. With this portable Water Dispenser, you no longer need the expensive and space-consuming bottom loading water dispensers in your house. FOOD-SAFE & MATERIAL: This automatic water dispenser is made from high density ABS plastic and food-grade silicone water hose. UNIVERSAL COMPATIBLE: The drinking dispenser is suitable for pure bottled drinking water and a variety of model gallon barrels without prying the lid. FOLDABLE DESIGN: The folding water outlet design reduces dust and pet contact, ensuring clean and safe drinking water. It's easy to carry in the storage bag, making it perfect for home, office, picnic, beach day, and barbecue. THREE MODES ARE AVAILABLE: You can choose 40S(800M), 80S(1600ML) mode and the pump automatically shut off when it's done. Or select the continuous pumping mode. Press the button to pull out the water, press again to stop pumping. Simply fasten the small pump to the bottle mouth, and flip the switch for hassle-free operation.