ECHO 58-Volt Lithium-Ion Brushless Cordless String TrimmerECHO's CDST 58V2AH featuring a Speed Feed 400 trimmer head has a 14 16 adjustable cut swath for your trimming needs. The variable speed trigger and high low speed switch give you amazing power control. ECHO's CDST 58V2AH battery runs for about 45 minutes and charges quickly. Brushless motor provides superior power, run time and durability 20% lighter reducing user fatigue Variable speed gives power control High low switch for more power or longer run