The Xite™ Fluorescence Flashlight System includes single-wavelength fluorescence excitation flashlights available with any of the five wavelengths in the NIGHTSEA line, paired with matching barrier filter glasses for maximum viewing contrast. Features a tightly focused for a high intensity illumination spot, a 15 degree diffuser cap that provides a wider and softer beam. It has two power levels, plus unique flashing mode and battery status indicator and an add-on diffuser for a broader, smoother beam. With a rechargeable high capcity lithium battery it is compact and lightweight. Each set also includes: Diffuser cap, microfiber case for storage and cleaning, battery charger with USB chrging cord and a padded form shipping/carry/storage case. Color: Royal Blue w/green-only. Excitation: 440 - 460nm .