Olight M21 Warrior 500 Lumen Luminus SST-50 LED Flashlight Black World-class super bright Luminus SST-50 LED. Max 500 lumens. IP68 Water resistant. Tactical momentary-on forward switch, protruding switch for easy momentary or click to lock on. Three digitally controlled constant brightness levels and strobe: 20lm (30hrs), 80lm (8hrs), 500 lm (1.2hrs), Strobe (500lm/2.4h) Auto memorization of specific function for instant access. Linear functional adjustment for easy change of functions. Front removable stainless steel striking bezel and rear striking bezel, removed for daily use, installed for close quarter combat.