... ,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 18650 lithiumbattery with protected circutboard, use time ... 2.5 hours. 6. Specifications:mm 123(length) ×24 mm ...