DEWALT-built high power, high efficiency brushless motor delivers up to 57% more run time over brushed. XR Li-Ion batteries with fuel gauge provide 33% more capacity over standard packs. Heavy-duty 1/2" ratcheting nitro-carburized metal chuck with carbide inserts for superior bit gripping strength. 3-Mode LED provides lighting in dark or confined spaces up to 20X brighter than previous model. LED Spotlight Mode features 20 minute shutoff function allowing for extended work time in dark or confined spaces. 3-speed, all-metal high performance transmission optimizes tool-to-task for fast application speeds and improved run-time. 0-38,250 BPM for fast drilling in masonry materials. This DEWALT High Performance Industrial Tool comes with a warranty package that includes: 90 day money back guarantee, 3 year limited warranty, and 1 year free service contract.