No pumping required while using with liquids and water soluble solutions Up to 4 hours of spray duration on a single charge or 50 gallons of liquid (with 8002 nozzle) 18 volt Lithium-Ion 2.1 Ah Battery charges in 3.5 hours (charger included). Interchangeable Battery system. Pre-set spraying pressure at 40 psi, 0.2 GPM, for typical landscape applications (with 8002 nozzle) Powder-coated Steel frame for durability and chemical resistance Fully padded back harness for all day spraying comfort Triple filtration system prevents clogging during use and enables pump longevity Premium, lockable shutoff; 21 inch poly wand; and the highest quality Viton seals for chemical resistance 4 nozzles included: brass adjustable, low volume flat fan, high volume flat fan, and foaming nozzle. Also accepts tee jet nozzles. Not designed for use with wettable powders.