Core gives you a powerful trimmer that will run as long as a tank of gas--but without the gas! This CGT400 Gasless Powered Trimmer (CGTSD) is conveniently lightweight and perfectly balanced for easy handling. It features a dual mode power control speed for normal grass trimming, or torque for optimum performance and longer run time. It can also run for up to 70 minutes and has a head speed of 7,000 RPM/5,000 RPM.