The nitrogen-filled, rubber-armoured housing of the Celestron Trail Seeker 80 Spotting Scope means that it is fully waterproof & incredibly durable. With a zoom up to 60x magnification, it has a 80mm objective design that lets in plenty of light whilst also keeping the scope compact & portable. The optical system has the proprietary XLT multi-coating that produces high resolution images with outstanding contrast & sharpness, & the dual focus mechanism means that you can conveniently fine-tune your subjects when they're in focus.