Makita is a pioneer in brushless motor engineering, battery technology, and miter saw innovation, and has combined all 3 in the 18-Volt X2 LXT (36-Volt) Lithium-Ion Brushless 10 in. Dual Bevel Sliding Compound Miter Saw with AWS. It's powered by two 18-Volt Lithium-Ion batteries for maximum power, speed and run time, but without leaving the 18-Volt LXT platform. Makita brushless motors are engineered for up to 50% longer run time, increased power and speed, and longer tool life. Its also equipped with Auto-Start Wireless System (AWS) for wireless connectivity with an AWS-equipped dust extractor (sold separately). The efficient BL Brushless Motor delivers up to 4,400 RPM for fast and efficient cutting, with Automatic Speed Change technology to adjust cutting speed and torque under load for optimum performance. For improved efficiency, its equipped with Auto-Start Wireless System technology. AWS utilizes Bluetooth technology for wireless communication between the tool and dust extractor (sold separately). When the trigger of the AWS-equipped XSL04ZU is engaged, the AWS-equipped dust extractor powers-up. When the trigger is released, the dust extractor powers-down. AWS is intelligent communication that eliminates cords and excessive noise since the dust extractor runs only when the tool is running.