SkyWatcher S11620 Traditional Dobsonian 10-Inch (White) 10 (254 mm) Dobsonian-style Newtonian 1200 mm focal length (f/4.7) 2 single-speed Crayford-style focuser with 1.25 adaptor 4-element Plssl 25mm and 10 mm 1.25 eyepieces Solid rocker-mount with Teflon bearings and tension clutch for altitude