The Sea Dragon Fluoro-Dual Beam emits a powerful blue light and has an integrated dichroic filter, creating the optimal light wavelength to excite underwater life. Switchable beams quickly adjust with the push of a button from blue fluoro 65° flood to white 800 lumen 15° spot. The Fluoro-Dual Beam includes yellow barrier filters (mask and lens) to filter out the residual presence of blue color emitted by the light.