Makita XVJ02Z 18-Volt LXT Lithium-Ion Brushless Cordless Jig Saw, Bare-Tool Makita-built brushless motor and 3 orbital settings plus straight cutting deliver faster and more accurate cuts in a variety of materials Variable 6-speed control dial (800-3,500 SPM) enables user to match the speed to the application Efficient BL Brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge The BL Brushless Motor eliminates carbon brushes, enabling the BL Motor to run cooler and more efficiently for longer life The electronically-controlled BL Brushless Motor efficiently uses energy to match torque and SPM to the changing demands of the application