The Makita DHS661 Brushless 165mm Circular Saw comes equipped with Automatic Torque Drive Technology (ADT) that alerts you if the motor is about to become overloaded. This gives you a huge boost in productivity as you can now clearly see how your tool is performing. It features Auto Start Wireless System (AWS) so will connect to a compatible dust extractor with bluetooth. The extractor will then automatically run when switched on. The DHS661 has an aluminium base with 45 & 50° bevel cutting capacity. The DHS66 features a side mounted battery which gives it a much lower centre of gravity than other saws. This gives you more control over the saw and allows for a much cleaner finish! At the heart of this Saw is the brushless motor that allows you to use the drill efficiently. As part of the design, the tool utilizes every bit of battery power when you need, all while reducing the need for ongoing maintenance by reducing the amount of heat generated and working more efficiently. The technology in creating a brushless motor system allows for perfect symmetry between battery power and usage ensuring you get all the power you need, when you need it.