10x21mm Triplet LED Illuminated Jewelers Magnifying Eye Loupe Magnifier Three separate lenses are bonded together for sharp, clear images. 6 super-bright white LED plus unique ultraviolet light-band, 395nm spectrum Achromatically and aplanatically corrected lens Includes Key To Open/Close Battery Compartment Requires 3 AG7 Batteries (Batteries Are Included)