... ,easy to use 3,great for office,home,camping .etc. Battery water pump:1.Material:ABS, P.E, food-grade,without ... bottle, Neck Dia. of the bottle: 56mm(standard), 58mmAdvantage:1.Battery operated. (2*LR20,D Size) 2.No drips or leakage ... . 5.Spare brush for easy cleaning. 6.Stable liquid flow. battery water pump