Nite Ize distributes little microlights (Is that redundant?) that are inserted into polycarbonate plastic "wands" that projects the light into a beam. Consequently, the wand-and-microlight combination is at once a signal marker, spot beam, and beacon for divers. Guaranteed to shine for up to 15 hours, the versatile little light features a high beam, a low beam, a strobe, and a signal. People topside can see the small unit's light for up to a mile. If you want to see how bright the little lights are, check out Nite Ize's demonstration video.
The shockproof, waterproof wand is positively buoyant -- but depth-rated to 1000 feet. The complete package sports a wrist lanyard and a small compartment to store two spare batteries. The light runs an affordable $15.
