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.