Gskyer 80mm AZ Space Astronomical Refractor Telescope, German Technology Scope, AZ80400, White Aperture: 80mm. focal length: 400mm. focal ratio: f/5. rack-and-pinion focuser. comes with Low (25mm) , medium (10mm) and high (5mm) magnification eyepieces & 3x Barlow lens Fully Multi-coated optics glass lens ,1.27in preassembled adjustable full size stainless steel tripod& accessory tray, 1-years limited warranty on parts and labor. Large aperture-80mm, all front and back lens are coated with multilayer film, which render excellent transmittance and clear image. Excellent CF4 optical glass with low dispersion is adopted, which can eliminate chromatic aberration of red, green and blue. The Gskyer 80 series telescope ushers in a superb path to explore the universe for those aspired to become astronomers. It is a collection of combination of quality, property, price and appearance advantages, which is exclusively designed for beginners