Petzl Tactikka +RGB Versatile headlamp for military personnel with CONSTANT LIGHTING technology, suitable for proximity lighting and rapid movement, allowing the user to remain discreet while preserving night vision Brightness does not decrease gradually as the batteries are drained Headband with buckle for easily changing how it's worn, e.g. to wear the headlamp on the helmet, on the head, or around the neck, etc.. This item will ship from OmniProGear