Chapin International 63985 Black & Decker Backpack Sprayer, 4 gal, Translucent White Features a Black & Decker 20-volt Lithium Ion battery for up to 1.75 hours of continuous spraying 35-40 psi with a 35-foot maxium horizontal spray stream 4-gallon tank with 6-inch wide mouth funnel for easy filling and cleaning Cushion grip shut-off with three nozzles for a variety of applications Straps for prolonged use. This shut off does not have a lock-on/lock-off feature..Spray Stream Max Vertical:up to 27-feet