Safe material: BPA free drinking water dispenser, food grade silicone hose, 304 stainless steel, high density abs plastic, non-toxic and odorless. . Practice and Compatibility: The electric pumping device is suitable for pure bottled drinking water and suitable for all types of gallon buckets without opening the lid. Just attach the small pump to the mouth of the bottle. One-click operation, completely worry-free. . USB Rechargeable Design: Intelligent USB charging design, long battery life, no noise, can also be used at night. The built-in rechargeable battery only needs to be charged for 3 hours. Once fully charged, it can be used for 30-40 days or about 5-7 5 gallon bottles of water. . Low power consumption and widely used: The product power of this drinking water pump is 4W/5V. Don't worry about excessive power consumption. This is a high-quality, energy-saving drinking device. It is simple and user-friendly and can be used anywhere. It is the best choice for office, home, kitchen, school, picnic, etc. The portable water dispenser is suitable for indoor and outdoor use. . Please note: The drinking water pump is suitable for gallon buckets with a neck of 5.5 cm. Please confirm your neck size before purchasing. If at any time you have any questions about our water dispenser, please contact us directly. We will do our best to solve your problem. Your satisfaction is our greatest motivation! .