The new HiKOKI C3606DA Multi-Volt Cordless 165mm Circular Saw with Brushless motor technology from HiKOKI is more efficient than ever before. You will find this a really comfortable tool to use with its compact and lightweight design. This cordless circular saw from HiKOKI looks to offer about a 5% increase in max power output over the older 18V model. In turn it has a faster cutting speed 4300rpm and can cut 66mm when at 90? or 45mm at 45?.Longer Battery LifeUp to 50% increased run time per battery for more work with less downtimeIncreased DurabilityHigh tool durability via low friction motor, which produces less heatIncreased Power and PerformanceThanks to improved electrical efficiency and power transfer