Fits the VL4200 and VTL2600, and changes what a night dive can be. The FDK44 unlocks fluorescence diving with the light you already own — swim the same reef you know and watch corals, anemones, and camouflaged critters bloom in glowing, otherworldly color.
Pairs well with: Bigblue's Fluorodive mask filter, so your eyes catch the full glow.