Backpack Vacuum Vacuum Power Source Cordless Vacuum Filtration Type HEPA Filter Efficiency 99.97 Percent at 0.3 microns Vacuum Collection Type Reusable Bag Vacuum Capacity 1/2 gal Vacuum Pickup Type Dry Vacuum Air Flow 70 cfm Static Pressure 44 in Weight 9.9 lb Height 14 3/4 in Sound Level 69 dB Motor Efficiency Type Brushless Number of Motor Stages 2 Frequency None Hose Dia 1 in Hose Length 3 ft Plug Type Cordless Voltage 36 V Cordless Tool Battery Type Li-Ion