The Makita DSP600/1 Brushless LXT Plunge Saw is powered by 2 x 18V Li-ion batteries in series (not supplied), to supply energy to the powerful 36V DC motor drive system. It has an efficient brushless motor with a soft start feature and an electronic brake for added user safety. Automatic Torque Drive Technology automatically changes the cutting speed according to load condition for optimum operation. Other features include a variable speed control dial, depth stopper for splinter free cutting and positive stop for bevel adjustment. Comes with the Auto-Start Wireless Unit. The wireless unit connects to compatible dust extractors via Bluetooth(r). The dust extractor then automatically runs while the switch is on and off when the machine is switched off. Comes as a Bare Unit, NO batt.