Safety Material：High-density ABS Plastic Shell, Food-grade Silicone Hose, BPA-free.     Wide Applicability：Suitable for all standard size water bottles (standard size is 2.16 inches (5.5 cm) neck size), such as 2, 3, 4, and 5 gallon water bottles.     USB Powered：The water pump comes with a 1200ma lithium battery, After the USB is fully charged, it can be used for 30-40 days or can drain 4-6 5-gallon water bottles.     Wide Range Of Uses: The pump is small and portable, you can use it at home or office, and even use it at picnics, camping, and parties.     Lower Noise: The upgraded water pump has lower noise than the previous water pump, which makes you feel more happy.     Strong battery life                                                       Full charge by 3 hours        The water dispenser comes with 1200 mAh lithium battery, After the USB is fully charged, it can be used for 30-40 days or can drain 4-6 5-gallon water bottles.                                   Installation Notes:                                   Connect the water bottle pump to the silicone hose (included in the package).        Put the silicone hose into the water bottle and press the water bottle pump to the water bottle.        Press the one-key start button to pump water, after pumping, press the button again to close.        When the battery is exhausted, please use the usb charging cable (included in the package) to charge.                                   Simple and efficient                                          High-density ABS Plastic Shell, Food-grade Silicone Hose, BPA-free.        Suitable for all standard size water bottles (standard size is 2.16 inches (5.5 cm) neck size), such as 2, 3, 4, and 5 gallon water bottles.        The upgraded water pump has lower noise than the previous water pump, which makes you feel more happy.