The perfect spotting scope for outdoor enthusiasts the alder 20 60x65 packs fully multi coated optics into a portable and durable design perfect for bird watching target shooting and observing impressive landscapes this waterproof fog proof and nitrogen purged scope has been built to withstand all weathers fully multi coated optics spotting scope for outdoor enthusiasts waterproof fogproof and nitrogen purged objective lens 65mm for brighter images 20 60x magnification