Internal pump design "No leaks". Can be used with wettable powders and liquids for all applications. Constant output of 40 PSI. Cap element with Viton check valve. Pro Closing with 50 inch reinforced hose and pressure relief nut (to prevent hose mess.) 25 inch stainless steel wand with polyline. Nozzle Kit (3) - (Adjustable Red Poly-Volume Fan, Bulk Yellow Poly, Boil Nut, Viton Gasket). No pumping required Same features as our 4 gallon hand sprayer, but using an 18 volt battery to activate the pump rather than doing it manually. Up to 4 hours of spray time on a single charge or 50 gallons of fluid. The shock-resistant battery compartment keeps the battery hidden and safe from liquid that can cause damage. Easily accessible filters in case of clogs, shutdowns and pumps reduce the buildup of large solids that can affect performance. The on/off switch, that's it. One year warranty.