Nitecore SRT5 (Black) Detective SmartRing Cree XM-L2 LED Flashlight - 750 Lumens - Free 2x CR123A, Holster & Bright Keychain Light Maximum 750 lumen output featuring latest Cree XM-L2 LED SmartRing allows you to easily adjust from 750lumen to 1 lumen, strobe mode and blue red emergency signal Compact and ergonomic designed, Fits your palm Use 1x18650 or 2xCR123A Batteries Bonus 2x CR123A battery & Lumentac 25 lumens Blue Keychain light