Short product description:
12.5 mm Skywatcher 1.25-inch illuminated eyepiece (model SW-5900) for telescopes. Provides 12.5 mm focal length in a standard 1.25" barrel, with illuminated reticle for easier centering and low-light targeting. Suitable for planetary, lunar and general observation; useful for guiding, alignment and improving target acquisition. Compatible with most 1.25" focusers and star charts.