The SL4 has been the gold standard for small utilitarian dive lights for decades. Owning an SL4 is owning a piece of scuba 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, UK using a digital controller to take maximum advantage of all four AA-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.
With a remarkable depth rating of 500', the SL4 gives you plenty of room to explore the ocean's mysterious depths. The durable light is made in the U.S.A. from corrosion-resistant polymer, with rubber overmold on the bezel.
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
Rubber sheath molded over bezel to reduce glare and improve impact resistance
The SL4 has the added benefit of providing light when all other solutions have failed. Even after the batteries are mostly exhausted, the SL4 can still emit several lumens for up to a week of continuous use