Hudson 13854 Never Pump Bak-Pak 4 Gallon Battery Operated Sprayer Sprays for 10 hours (600 Minutes) on a single battery charge. Includes AC charger that completely charges battery in 9 hours Tough, translucent, poly tank with Easy-Fill Opening Extra long 20 inch fiberglass/poly spray wand with curved tip for on-target spraying 72 inch, non-kinking hose for easy reach Large 4 tank opening allows for easy filling and features a screen filter to keep dirt/debris out of tank Large poly on-off valve - comfortable thumb-operated Bonus nozzle system with 4 different spray settings. Cone, Long-Reach, Dual cone & Fan