Features Backpack dust extractor powered by two 18V Li-ion batteries Auto-start Wireless System (AWS) Connects to Power Tool with Bluetooth Increased suction power 90W for better dust collection BL motor allows 2.0 m³/min of Max air flow / 11 kPa of Max sealed suction and long run time to go together Mode memory function allows to start in the same suction power when you turned it off previously Delivers up to 75 min of run time using BL1860B on normal setting Standard Equipment: 28mm dia 1.5m hose, front cuff 22 ,38, Rubber joint 24, Paper bagWireless Unit (Bluetooth chip) Available Variants:Tool only with bluetooth chip ( does not include battery / charger / carry case ) Note Tool only (without Batteries & charger) Capaity / Paper Dust Bag: 2.0 L / Cloth Dust Bag: 1.5 L Continuous Use (min.) / High: 40 / Low: 75 (with BL1860B) Max Air Flow / with Hose Complete 28-1.0: 2.0 m³/min/ with Hose Complete 28-1.5: 1.8 m³/min Max Sealed Suction / 11 kPa Suction Power / High / Normal with Hose 28-1.0: 90 / 45 W Suction Power / High / Normal with Hose 28-1.5: 85 / 45 W Vibration Level / Operation without Load: 2.5 m/s² or less Sound Pressure Level / 70 dB(A) or less Dimensions (L x W x H) / 230x152x373 mm Net weight / 4.5 kg