Product Specifications: Material: ABS, 304 Stainless Steel and Silicone Operating Voltage: DC 5V Power Rating: 4W Charging Time: 3-4 Hours Charging: Micro USB Charging Cable Suitable for: 2,3,4,5 Gallon Water Bottles Size: 2.9x5.1 inch Hose Length: 21.7inch Safe and Healthy: BPA free drinking water bottle dispenser, food grade silicone rubber tubing, 304 stainless steel, high density ABS plastic, no toxic and no smell, no harm to your health. Flexible Application: Convenience for indoor and outdoor, can be used for the office, home, Kitchen, camping, picnic, activities, etc. Design: Stylish looking, Portable, easy to use. Detachable Silicone Rubber Tubing: You can disassemble all of the parts for cleaning after a long time use. Note: Please replace the silicone rubber tubing regularly. The food grade silicone rubber tubing will cause hygiene issue if you don't replace for a long time. USB Rechargeable: Built in rechargeable battery allows you to use for 30-40 days or around 4-5 bottles of 5 gallon water once full charged. Compatible: Suitable for gallon barrels with a 2.16-inch (5.5cm) neck, it suitable for a variety of models gallon barrel without pry the lid. Easy to Use: Simply fasten the small pump on the bottle mouth. Just one switch operation, totally hassle free. Press once switch, pump 0.16 gallons of water and stop automatically. Press and hold for 3 seconds to switch the water pump to pump water all the time. Pipe Length: 4.7inch Package Included: 1 x Water Pump 1 x Food Grade Silicone Hose 1 x Stainless Steel Pipe 1 x Micro USB Charging Cable 1 x English Manual