Flex 18v Cordless Fan (503.002)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