No matter what you're applying, there's no more advanced backpack sprayer than Jacto's DJB series. Carefully control the application of foliar fertilizer with its drenching tip and exclusive timer switch, exactly delivering 5 to 300 ml with each squeeze. Jacto's tech also features self-diagnostics, the ability to measure walking pace, and multiple pressure settings, built on an advanced lithium-ion battery that can go from eight to over 12 hours (flow rate and pressure dependent). Jacto's DJB is the go-to backpack sprayer for the most demanding jobs, whether industrial sanitizing, commercial growing or professional landscaping. Jacto DJB Battery-Powered Backpack Doser & Sprayer