echo eforce™ 56v battery system ecm™ technology to maximize the battery's lifetime echo echo 56v 21" rwd mower echo 56v 12" chainsaw available at select stores echo шесно echo 56v 18" chainsaw available at select stores mecho echo 56v hedge trimmer niecho echo eforce mecho echo 56v 16" string trimmer echo® 56v 16" attachment capable string echo echo 56v string trimmer & blower echo echo® 2-cycle blower 25.4cc 2-stroke engine echo straight shaft string trimmer 21.2cc 2-stroke engine echo curved shaft string trimmer