Fitment: Red dot finderscope, suitable for 80EQ SCTW-80 and other astronomical telescopes.Red Dot Reflex Viewfinder: Red dot viewfinder finder scope, adopts an effective small LED red dot projection to help quickly and easily align the main telescope.Adjustable Design: The star finder scope is easy to adjust, supports horizontal and vertical adjustment, and also can adjust the brightness.Easy Installation: Telescope finderscope with a slide in bracket, easy to install, fast and convenient.Wide Applications: Professional astronomical telescope accessories, the viewfinder is a nice gift for astronomy enthusiasts. Specification: Product size: 11.5cmx9.5cm/4.53inchx3.74inchMaterial: plastic Package Includes: 1 Red Dot Finderscope Note: Please allow slightly errors due to manual measurement and different monitors.