Knapsack sprayer with dual system, electric and manual! Electricity is out?! Manual OK too!1) Tank capacity: 16L2) Lance: Fiberglass (Brass; Stainless Steel; Telescopic for option.)3) Nozzle: Cone Nozzle, Fan Nozzle, 4-hole nozzle or Y-shape nozzle etc. for your different needs.4) Quick pressure.5) Leak proof! 6) Battery: 12V, 8AH7) Continue working time: 4.5-5 hours