Basically, the light clips over a pocket, armor strap, or helmet band. The light swivels 90 degrees, and the LED gets about 40 hours of constant use from the watch batteries that power it. The LEDs come in red, white, green, and night-vision blue. It would look good clipped next to our Hobbit Hole knife. Cost is comparable to the Photo Microlight. One advantage is that this is a no-handed light.
Just food for thought. Christmas is coming, and the Skunk Works takes pride in exercising due diligence in seaching out neat-but-practical stuff for our troops.
Now...I LIKE that. Appeals very much to my inner geek.
Skunk Works; I like it!