LEDwholesalers 100 Meter Waterproof Dive Scuba Light with 3 Watt LED Flashlight ABS Body, 7208
This 11 LED flashlight is water tight and capable of depths up to 100 meters. It is made out of strong AABS plastic so it won't break. The LED's are each 18,000 MCD, which produces a great light even in the water. it is easy to use because you just twist the head on and off, and you won't loose it because there is a built in strap.