M18 is designed for tactical use; Added attack stainless steel head tail tactical switch and new operation; Cree XM-L2 LED; High optimized minor-caliber smooth reflector increase 80% peak light luminous flux up to 500lm; Powered by 1 x 18650 battery or 1 x CR123A / RCR 123A batteries built-in high efficient constant current drive circuit and precise light-heat balance control program perfect harmony of brightness and working time; Simple lightweight creative and reliable structure solid and durable perfect accessories suitable for hunting and other outdoor activities; Latest Cree XM-L2 LED maximum up to 500lm; 3-mode: Hi Low 10Hz fast strobe