Specification:  Caliber:102mm Focal length:660mm Focal ratio:f/6.47 Star Finder:6x30 Focusing seat:2inch (including 1.25inch adapter ring) Peak mirror:1.25inch Eyepiece:Prosso 25mm Multiplier:2X Optical coating:FMC multilayer green film Bracket type:EQ3 equatorial mount Tripod:Double track aluminum alloy Heavy hammer:1.8kg  Features:  High Quality Optics: 660mm(f/6.47) focal length and 102mm aperture, fully coated optics glass lens with high transmission coatings creates stunning images and protect your eyes. High Magnification: Come with two replaceable eyepieces(4mm, 10mm) and one 2x Barlow lens. Adjustable Tripod: This telescope allows for many different viewing positions with a adjustable aluminum tripod.  Easy to Operate: No tools are required for reflecting telescope even for the novice, quick and easy to focus.  Package included:  1 x Astronomical telescope 1 x Tripod 1 x Lens barrel bag 1 x Accessory bag 1 x Instruction manual 2 x Eyepieces