Optical Design: RefractorAperture: 70mm(2.75in)Focal Length: 400mm(15.7in)Focal Ratio: F5.7Eyepiece1: 25mm(0.98in)Magnification1: 16XEyepiece2: 10mm(0.39in)Magnification2: 40XMax Magnification: 120Finderscope: 5*24Zenith Mirrors: 48°Erecting BAK7 prismMount: Altazimuth MountOptical coating: Antireflection Blue FilmBarlow lens: 3XResolution: ≤3.1Angular Field of View: 2°24""Tuble connection: Altazimuth Mount ScrewTripod: Aluminium Alloy Tripod(can be adjustable)Shipping Weight: 2.8kg(6.17 lb)Item Dimensions: 24.8in*8.26in*4.33in