The optical system of the Celestron Trail Seeker 100 Straight Spotting Scope has an XLT multi-coating that produces high resolution images with outstanding contrast & sharpness. This scope is rugged & durable, with a rubber-armoured body that is filled with nitrogen to ensure it is waterproof & tough. Super portable, it has a zoom of up to 67x magnification, & a 100mm objective design. The dual focus mechanism means that you can get subjects in focus quickly, & fine-tune the adjustments.