***** **********Best Quality Guranteed. *****9x50 finder scope with 50mm objective lens diameter, brighter DSOs directly visible. *****A built-in red LED illumination provides unobtrusive, dimmable and easily seen lighting for the crosshairs. Illuminated double cross-hairs, for quick and accurate location of objects. *****Folder fits onto most telescopes, easy focusing at the objective lens. *****The achromatic optics provide a bright, true-to-life image at 9x magnification. In addition, the optical surfaces have been multi-coated to prevent irritating reflections. *****Adjustment of finder scope alignment via two screws and spring. Requires three SR-54 batteries for illuminator operation, NOT INCLUDE