Greenworks® 2131902 String Trimmer Tool-Only 82V 1.2KW - At the heart of this string trimmer is a compact direct drive motor that produces 1.2KW of power and max speeds of 6000 RPM. Applying this power directly to the spool optimizes cutting performance and maximizes your run time with the help of the 4Ah battery capable of 2.5 miles of continuous run time. This is a lightweight commercial string trimmer, with low vibration for less fatigue to trim more comfortably.