Sky-Watcher 70mm diameter refractor. The Focal Length is 500mm. OTA only with dew shield. Has rack and pinion focusing. Made in China. Optics are mediocre at best but sufficient for a guide scope. Could also be used for terrestrial viewing. 2 yrs. old. Clean with no dings, scratches. Requires 100mm rings to mount. $45 plus $10 s&h withing CONUS.