"The SL4 has been the gold standard for small utilitarian dive lights for decades. Owning a SL4 is owning a piece of diving history. It is compact enough to slide comfortably into a BC pocket and has a bright center spot to light up dark spaces under any type of diving condition. Now, UK is introducing the updated and enhanced Mark 2 version of the SL4. For the first time, we are using a digital controller to take maximum advantage of all four C-size batteries. The SL4 Mark 2 boasts an eye-watering 600 lumens of brightness, while retaining all the great qualities that made it the most popular dive light in history."
Machined reflector yields a bright center spot, which gives the light the ability to penetrate the darkest ledges or murkiest water
All polymer construction makes it impervious to seawater, the enemy of steel and aluminum alike
Single handed switching with thumb or index finger
LED will not break when dropped and lasts thousands of hours
Equally great performance in and out of water for home or work
