The black and decker gl c3630l cordless grass trimmer has a high torque gear system with e drive technology to get the job done faster through an improved rate of cut it acts as 2 tools in 1 and easily converts from trimming to edging power select provides a choice of maximum run time eco mode or power turbo mode the efficient cutting system powered by a lithium battery cuts up to 2500m in one charge the trimmer is cord free and hassle free with no danger of cutting the cord and no harmful emis