Gskyer Telescope, AZ70700 German Technology Telescope, Instruments Infinity Refractor 100%New. Aperture: 70mm(2.8"). focal length: 700mm. Focal Ratio: f/10. Rack-and-pinion Focuser &low (25mm), medium (10mm) Multilayer glass green coated optics for enhanced image brightness protect your eyes, with detailed instructions for our every customer Altazimuth mount with a slow motion control the adjustable stainless steel tripod for precision tracking means you can easily track objects day or night One-year warranty