The Makita DJR188Z18V features: LED Joblight – built-in L.E.D. light with pre-glow and after-glow to illuminate the work area. Tool-less blade clamp – blade change system allows for faster blade installation and removal for increased productivity. Electric brake – rapidly slows the cutting blade for smoothing and safer operation. Compact design – weighing only 2.9kg with battery and only 316mm in length reduces the operators fatigue. Lock off button – allows tool to be locked to prevent sudden or accidental start up doing use or transportation. Ergonomic design – designed for comfortable use even when using overhead or in upside down applications. BL Brushless Motor – efficient energy production enabling lower heat production and increased work on a single charge.