USER BENEFITS: Brushless motor - Variable speed control by trigger - Constant speed control - New adjustment lever for easier tool-less tension adjustment of saw chain - Electric chain brake - Kickback brake - Oil Capacity Display - Ergonomic soft grip - Large separate-type metal spike bumper. Spike grips work-piece firmly to provide more control - Adjustable automatic chain lubrication - Lock-off lever - Powered by two 18V Li-ion batteries in series to supply energy to the powerful 36V DC motor drive system - Main power switch with auto power-off function -