At 950 lumens, the XERA LED means serious business in the high power category. Driving this light is the most efficient, high power LED on the market. Pick from ten different steps of brightness, with three modes at your disposal, & you can personalise the settings. You can select from a wide 16-degree flare or narrow 14-degree spot & both standard & narrow optic lenses are included in the bundle for your choosing. There is a bar mount, helmet mount, head belt & extension cable. Run time: Maximum brightness: 2hrs Minimum brightness: 23hrs