This is the Sealife Sea Dragon Fluoro-Dual Beam Light Kit
Features:
Switchable dual beams features six CREE XT-E Royal Blue LED's (450-460nm) flood beam and one CREE XP-L LED white spot beam
65° fluorescent wide angle beam and 15° white spot beam angles evenly illuminates the subject with no hot spots
One button control for easy operation - one button to power light on/off and select brightness
Four brightness levels: 100% fluoro flood, 50% fluoro flood,100% white spot, and 50% white spot
Hidden emergency signal mode: 1 second blink interval and SOS Morse code
60 minute burn time at full power and constant brightness
Depth rated to 330 feet/100 meters
Easy to expand with Flex-Connect trays, grips and Flex Arms, handle, Y-S, ball joint, cold shoe and other accessories
Quick-release button to detach light and aim in crevices and hard to reach areas
Includes integrated dichroic filter and two universal barrier filters for your dive mask and camera for optimal fluoro viewing and photography
Corrosion-proof metal light head for heat dispersion and durability
Removable 25W Li-Ion battery w/ charger and international plug adapters included
Waterproof battery compartment - even if the O-ring seal fails, the battery compartment is isolated so water cannot reach the internal electronics
Universal mounting screw fits SeaLife and other brands of underwater cameras w/ standard ¼-20 tripod mount
SeaLife Sea Dragon Fluoro vs. Harmful UV lights
For BEST results and SAFETY reasons, the Sea Dragon Fluoro-Dual Beam uses Cree Royal Blue LED's combined with a proprietary dichroic filter. SeaLife NEVER has and never will use Ultraviolet (UV) LED's.
Some companies are selling underwater UV lights claiming the results are better than blue LED's, and that there is no need for yellow barrier filter over your mask and/or camera. The truth is that UV lights pose a serious safety hazard to the eyes of humans and sea creatures. UV light is invisible, so you don't realize that your eye is being bombarded with UV rays. It is a proven fact that extended exposure to UV light has been linked to eye damage, including cataracts, macular degeneration, pingueculae, pterygia and photokeratitis that can cause temporary vision loss.
The Sea Dragon Fluoro-Dual beam's Blue LED's, combined with our exclusive dichroic filter, emits a powerful blue light creating the optimal wavelength to excite underwater organisms. To see the fluorescence effect best, two yellow barrier filters are included - one for your mask and another for your camera. The primary purpose of the yellow filters are to absorb the visible excess blue light, so you only see is the fluorescence effect.
Underwater testing shows that more sea creatures fluoresce when exposed to the Sea Dragon Fluoro-Dual Beam when compared to UV lights.