CatEye: "Compact Opticube
The Compact Opticube Light weighs just 78 grams with batteries and is only 9.3cm in length. The three ultra bright white LEDs are magnified using our Opticube lens and reflector technology to put out over 90 candlepower. The innovative magnetic switch allows us to achieve a waterproof seal to 50 meters/ 165 feet. The unique, built-in mount and strap can be adjusted to fit different size bars, and can be rotated to mount the light on a handlebar, a stem, or even on a helmet. With a run time of 80 hours on constant mode or 160 hours on flashing mode, this light breaks new ground in size, performance, and versatility."