LED LIGHTING: Keep your work subject illuminated with the trigger-activated LED light panel located above and in front of the trigger. Its location prevents any shadows from being cast by your trigger finger ONBOARD FUEL GAUGE: LED lights on the side of the impact driver let you know, in increments of 25%, how much battery you have left AMBIDEXTROUS BELT CLIP: Whether you’re right or left-handed, you can keep the included belt clip attached on the side of the driver that is most convenient for you REDLITHIUM TECHNOLOGY: This driver has internal computer technology that communicates with RedLithium batteries powering it. It enables cross-communication between the two systems, keeping the tool’s motor from overheating or drawing more power than it can handle Optimized for high speed fastening, the Milwaukee M12 1/4" Impact Driver delivers unmatched fastening performance in a lightweight, tool belt portable design. A high performance motor delivers 0-2,500 RPM for increased application speed. Additionally, an on-board battery fuel gauge displays remaining run time.