?This cordless electrostatic backpack sprayer gives the best solution for hard-to-reach surfaces, areas and shaped equipment (no contact). It provides a uniform spray on all surfaces while using 60% or more less solution than conventional sprayers." ?This backpack electrostatic sprayers holds 5.28 gallons of chemical, allowing you to coat up to 20,000~30,000 square feet on a single tank of fluid. ?Cordless convenience allows for effortless movement from room to room. Equipped with a 12,000 mAh battery that lasts for 2 hours ?The droplet has a medium diameter of 60 µm, and the fine and thin droplets are less likely to slip off the surface due to the strong adsorption force, reducing the waste of solution. This Portable Battery-powered Electrostatic Backpack Sprayer jet distance can reach up to 16.4ft/5m . ?100% RISK FREE PURCHASE - We offer 365 days support and 100% refund if you are not completely satisfied with the quality of the sprayer, if you have any questions, please feel free to contact our customer service team . We will answer and provide solutions for you.