12" (305mm) Truss Tube Dobsonian. 1525mm Focal length f/5. 2" two-speed focuser with 10:1 speeds. Deluxe Red-dot finder. Two large radial fans for fast thermal equilibrium. Lightweight and portable two-piece design allows the primary objective to store in a unique self contained aluminum housing with a lid for transport and the secondary fits inside the aluminum rocker box. Primary mirror inside mirror box weighs 41.7 lbs. Primary, secondary and truss tube assembly weighs 50.5 lbs. Rocker box weighs 15.7 lbs. Total weight 66.2 lbs.