There is no hand-pumping with the ProPack from Shurflo.  Each unit has a Rechargeable Battery Pack that can spray 120 gallons on a single charge.

• Heavy Duty Hand Lever can be locked in open position reducing fatigue on big jobs.

• High performance chemical resistant Shurflo pump.

• Variable speed and adjustable nozzle allows for light or heavy duty spraying.

• Computer Engineered Design perfectly matches the body's contours for ultra comfortable fit.  Thickly padded shoulder harness add to comfort.

• Tank Capacity: 4 US Gallons

• Pump: 12VDC, 1.0gpm, 40 psi, Demand Switch

• Convenient battery pack charges in place or removes in seconds for remote charging.