With One U.S. CREE XM-L T6 Led lights, brightness 1600LM, life of 100,000 hours. 306 Products ... current 300mA,brightness 150LM (4) Strobe : current 1200mA,brightness 500LM (5) SOS: current 2500mA,brightness 1000LM3 .Optical PMMA lens material.4 ... .Shell aviation aluminum, CNCmachining, anodizing surfacetreatment. 5 .With One 145000 lithiumbattery with protected circutboard, use time 1 ...