The Hudson® Pro® NeverPump® Lithium-Ion Bak-Pak® Sprayer is a convenient, reliable way to carry enough fluid to handle larger jobs. Its high-performance, rechargeable Li-ion battery-powered pump sprays for up to 5 continuous hours on a single charge. The 20in. long spray wand includes 4 nozzles to deliver adjustable spray patterns. Ergonomic shoulder straps with adjustable pads offer even weight distribution for carrying comfort. The large 6in. tank opening for easy filling has a built-in filter for keeping dirt and debris out of tank to reduce clogging. Viton® seals and gaskets allow you to spray a wide variety of chemicals.