40cm Oregon Bar and ChainHigh Efficiency Brushless Motor ? Delivers up to 130* 4?4? cuts per charge (*3.0 Ah)Automatic Oiling ? Reduced MaintenanceTool Free Bar fitment & Chain Tensioning ? Fast Chain AdjustmentsVariable Speed Trigger ? No pull starting and improved control during cuttingChain Speed ? 15 m/sExtensive over-mold, for extra grip and comfort in prolonged use