The ECHO 58-Volt Cordless System combines the reliability of professional grade products, the power of gas and the convenience of cordless into a line of Professional Grade outdoor cordless products. ECHO is recognized for its high-quality gas outdoor power equipment – built for heavy, professional use. Customized with a brushless motor, the ECHO 58-Volt String trimmer delivers superior power and run time. Equipped with a variable speed trigger, and a high-low speed switch, ECHO trimmers are designed for ultimate user control. The adjustable cutting swath allows you to choose more aggressive cutting, or extended run time. With the patented Speed-Feed™ 400 bump feed head that comes on standard ECHO gas trimmers, this unit is built for the toughest jobs.