Strobe. Water resistant. Impact resistant. CREE XP-G3 LED. Modes: Main Lamp-High (270 lumens 5.5h runtime); Low (100 lumens 16h runtime); Side Lamp white-High (60 lumens 17h runtime); Low (30 lumens 21h runtime); Side Lamp Red-High (3 lumens 26h runtime). 81m beam distance. Elastic breathable head strap. Multi-function hook. Integrated emergency whistle in headband buckle. Requires (3) AAA batteries (not included). Polymer construction. Color: Black. Boxed.