Long-lasting Battery: With a built-in rechargeable 1200mAh battery, this water dispenser pump provides continuous usage for 30-40 days or approximately 4-6 bottles of 5-gallon water on a single charge. Say goodbye to frequent recharging and enjoy uninterrupted hydration. Universal Compatibility: Designed to accommodate various gallon models without the hassle of prying lids, this electric pumping device is suitable for pure bottled drinking water. Simply attach it to the bottle mouth for effortless operation. Safe and Reliable: Crafted with in mind, this water pump is constructed from materials including food-grade silicone hose, 304 stainless steel, and high-density ABS plastic. Experience pure, odor-free drinking water every time. Easy Operation: Simplify your hydration routine with one-switch operation. Whether for kids or elders, using this water bottle pump is completely hassle-free. Just fasten it onto the bottle neck and enjoy instant access to refreshing water. NOTE:Fits standard 2.16 neck size gallon buckets, compatible with neck sizes 2-2.48 inches (5-6.3cm); please verify compatibility before purchasing.