With 400 Lumens of vibrant white light, our 3 ounce Helmet Mounted Light attaches to a variety of standard helmets with rail capable systems. The three operating modes: constant, momentary and strobe provide a concentrated, high-intensity beam to fill your field of view for close to mid-range target identification. Extensively tested for performance, durability and reliability, its compact, durable design is simple and easy to mount, with no need for additional tools. In addition, the easy-to-operate lockout system ensures the light isn't activated until you're ready.