With One U.S. CREE XM-L T6 Led lights, brightness 1600LM, life of 100,000 hours. 306 Products Description1. With One U.S. CREE XM-L ... PMMA lens material.4 .Shell aviation aluminum, CNCmachining, anodizing surfacetreatment. 5 .With One 145000 lithiumbattery with protected circutboard, use time 1.5 hours ... 106(length) ×24 mm (diameter),weight is 77g.7.Go with the presented twotype o sealing ring.