The Makita 18-Volt X2 (36-Volt) LXT Brushless 6-1/2 in. Plunge Circular Saw, with AWS (XPS02ZU) delivers precise and more accurate cutting when combined with an optional guide rail system (sold separately). The saw and rail system work together to produce accurate cuts with minimal tear-out. The saw combines a powerful Makita-built brushless motor powered by two 18-Volt LXT batteries with Automatic Speed Change Technology, which adjusts cutting speed and torque during the cut for optimum performance. The XPS02ZU is equipped with Auto-Start Wireless System (AWS), which uses Bluetooth technology for wireless power-on/off communication with the AWS-equipped dust extractor. AWS is intelligent communication that eliminates cords and reduces noise. The Saw has a variable speed control dial (2,500 RPM - 6,300 RPM) with soft start and an electric brake for added convenience. It has a large 2-3/16 in. cutting capacity at 90° with a bevel capability of -1 to 48 and positive stops at 22.5 and 45. When used with a rail system (sold separately) a Plunge Circular Saw is a more portable option to a table saw for select applications and is ideal for use on the job site or in a workshop. Its part of Makita's expanding 18-Volt Lithium-Ion system, the worlds largest cordless tool system powered by 18-Volt Lithium-Ion slide-style batteries. Makita 18-Volt Lithium-Ion batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger.