Glo-Toob Lighting AAA Series IR 940. Water resistant. Impact resistant. Lanyard. Three modes: Constant On (100percent 5.5h runtime) Constant On (25percent 27h runtime) Flash (1 Hz). 360 degree viewing angle. 940nm Infrared Ray LED. Can be attached to OPS-CORE ARC helmets 1" webbing and any Velcro loop surfaces. Body with scrub treatment to reduce surface reflections. Includes GTK mount and O-ring. Requires (1) AAA battery (included). Boxed with hanging tab. Specifications for Glo-Toob Lighting AAA Series IR 940: Manufacturer: Glo-Toob Lighting Battery Type: AAA Length: 3 in Weight: 0.26 lb Overall Length: 3 in Battery Life: 5.5 - 27 hours Package Contents: Glo-Toob Lighting AAA Series IR 940