5X 10X 15X Loupe Headband & Lighted Magnifier 4 Tools One Bausch&amp;Lomb 3X lighted magnifier that is ideal for reading assistance in low-light conditions, requires two Aaa batteries (not included), has a focal distance of 3" (76 mm) and measures approximately 5" x 1 1/2" (127 x 38 mm) One 5X, 10X and 15X lens folding magnifier with large lenses and heavy duty cover to protect the lenses One 15X plastic eye loupe with distortion free lenses and has a focal distance of 3/4" (19 mm) One 3.5X adjustable headband magnifier that has a focal distance of 2 1/2" (64 mm)