Achromatic refractor telescope with an aperture of 3.1 inches (80 mm) and a focal length of 15.7 inches (400 mm). The barrel is made of metal and the lens is multi-coated. The viewfinder uses an equal red dot type. Small and lightweight, easy to handle and can be used with confidence even for beginners. The barrel is equipped with a Vixen standard alligator plate, so it can be used on a variety of surfaces. The plate also has a 1/4" camera screw hole so it can be mounted on a camera tripod. Comes with 2 eyepieces (16x, 40x); The eyepiece has a T-screw, so you can attach the camera via a camera adapter (sold separately). ■Main Specifications Optical System: Refractor Aperture: 80mm Focal Length: 400mm Aperture Ratio: 1:5 Finder: Equal Red Dots Accessories: Eyepiece (10 mm, 25 mm) 90° Zenith Mirror Weight: Approx. 2.5 lbs (1.3 kg) (not including finder and eyepiece accessories)