Day or night, the Celestron Starpointer Finderscope with red dot finder makes finding objects a breeze. A mirror lens projects the image of a LED illuminated pinpoint into the line of sight, providing you with a red dot of light to center on the object you want to view. The Starpointer Finderscope comes with a CR-2032 3V battery & mounting brackets for easy attachment to any telescope or binocular. You can adjust the brightness levels for user comfort & there is an on/off switch for when the Finderscope is not in use.