The Remington Blood Tracker 3-N-1 headlamp offers 4 running modes: bright, 70lumen main beam that projects 70 lumens; blood tracking mode offering a 20 hour run time; night vision mode that projects a red L.E.D. beam that lasts 20 hours; and an emergency mode with 70 hours of a flashing red L.E.D. beam. A head strap and batteries are included. Unit is angle adjustable.