The Actik Core is a rechargeable, multi-beam headlamp for active pursuits in low light. Its 450 lumen output provides plenty of light for trail running, ski touring, walking at night or cooking in camp. The red light function preserves your night vision for close proximity lighting. The Actik Core uses a Petzl Accu Core rechargeable battery - it is compatible with spare Core batteries or with standard AAA batteries. The headband adjuster features an inbuilt whistle for attracting attention in an emergency.