Infrared + Visible LED IFF Marker Light for Tactical Helmets - IP68 Waterproof, tested up to 30M in open seawater - White flash exceeds FAA 3+ mile statutory visibility requirements for airborne operations - Four function modes: Colored LED, Colored LED + Flashing White Strobe, 60 fpm Flashing IR (US Military standard), 30 fpm Flashing IR (NATO standard)- Easy to manipulate controls even with gloved hands - Powered by 1x CR123 Battery or rechargeable equivalent (batteries not included) - Hook & Loop backing attaches to any loop pile surface - Curved base for flush mounting to most tactical helmets - No snag design - Ultra light weight, only 60g - Compact, measures only 85 x 55 x 34 mm