Halo SL White Light with Battery & Charger is much more than a headlamp. It's an innovative lighting system consisting of a white light gear halo with a 50 feet spotlight, which guarantees a visibility range of up to 350º in all directions over a quarter mile. It also has a battery life indicator, which is approximately 121 hours. In matte black, this halo light is lightweight and water resistant, which means that it can be submerged up to 1 meter for 30 minutes, making it perfect for flood lighting. In addition, it is cord-free and has a battery and charger included and offers compatibility with any standard helmet.