Electronic management system (EMS) protects the machine, extends the service life, and increases efficiency. Stepless air volume regulation. Soft start. Flexible use thanks to a hook, a 1/4" and 5/8" mount and a head that can be swivelled through 180°. Can be operated with a 18.0 V battery or via the 230 V power supply unit. Running time at maximum speed: approx 2,2 hours with 2.5 Ah battery pack and approx 4,5 hours with 5.0 Ah battery pack. LED battery capacity display. FLEX battery system: suitable for all FLEX 18 V battery packs. Delivery does not include battery and charger.