SureFire HL1-A-TN Tactical  Helmet LED LIght (3) White, (2) Blue, (1) Blinking IR/IFF

Details about the SureFire HL1-A-TN Tactical  Helmet Light:

This compact, multiple-output Helmet Light in tan features three white LEDs, two blue LEDS, and one blinking infrared LED that serves as a personal Identify Friend or FOe (IFF) beacon.  The white primary LEDs are perfect for general-purpose, close-work illumination; the blue LEDs serve the same purpose in a low-signature, night-vision-friendly color.  The Helmet Light attaches via a special mount that clamps semi-permanently to the rim of any Modular Integrated Communications Helmet (MICH) by means of two socket-head machine screws.  Once the mount is attached, the light can be easily slid onto the mount, where it locks in place; depressing a small ever slides it right off, so the Helmet Light can be quickly removed for servicing or transport onto its optional Z71 carry clip, which attaches to any MOLLE or ALICE vest, assault pack or gear.  Output/Runtime:  White High:  19.2 lumens/6 hrs Blue High:  2.5 lumens/20 hrs  White Med:  5.0 lumens/28 hrs  Blue Med:  0.8 lumens/48 hrs  White Low:  1.4 lumens/48 hrs  Blue Low:  0.3 lumens/96 hrs  Tertiary IFF beacon:  1.72mW/120 hrs  Price elsewhere is easily $150+