Smaller protector guard increases cutting area visibility. Soft start feature gradually increases speed to eliminate start up shock. Equipped with Star Protection Computer Controls™ to protect against overloading, over-discharging and over-heating. Includes bump and feed trimmer head with 0.080" twisted quiet line. Reverse mode for clearing entangled debris from the cutting head. Battery guard protects batteries from shocks, (e.g. fall damage, bumps, etc.) and acts as a secondary handle.