1. Designed to care for the elderly and children, easy to install, drink water with one click2. Designed with safe material,  no toxic and no smell, 304 stainless steel water outlet, health and environmental protection3. Suitable for pure bottled drinking water, a variety of models gallon barrel with 2.16-inch (5.5cm) neck4. Built in USB rechargeable 1200mAh battery, can be used for 30-40 days or around 4-6 bottles of 5 gallon water once full charged5.The water dispenser turns off automatically every 60 seconds working, more safe and smartInstallation Suggestion:1. If your bottle is the standard gallon barrel, please don't remove the bottle cap when you install the water dispenser2. If your bottle is the ordinary barrel, please open a hole on the bottle cap, then install the water dispenser in the holeThanks very much!Reminder:Charging cable includes white or black color, will be sent randomly, please understandAttention:Please don't boil the silicone tube in the water before using, which will damage it. Just wash the silicone tube with some dish soap is OK.