Smith & Wesson M&P6 CREE LED HD (High Definition) Flashlight with Strobe, This Hi Tech flashlight measures 6-Inch in length X 1-Inch diameter and includes an integrated pocket clip. One of the brightest flashlights you will find with 306 Lumen of brilliant white light on high beam and 34 lumen output in the low beam power saving mode. High intensity strobe function is operated with a separate switch near the head of the flashlight for quick access. Battery run time on high beam is 8 hours with a 20 hour runtime on low beam. State of the Art CREE LED diode is the latest technology, brightest long range LED on the market. Brilliant white CREE diode lasts forever, no need to replace bulbs. Tactical tail cap switch operates high and low beam function. Fits standard 1-Inch weapon mounts. 2 pcs. CR123A lithium batteries included. Lifetime warranty.