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Message: <blockquote data-quote="zertrat" data-source="post: 439193" data-attributes="member: 29670">I have used a pair for 20 yearsI have used a pair of trinovid 7 x 35 binoculars for 20 years. They are incredibly durable.  I have used them backpacking in western US mountains and canyons, and very extensively during my professional fieldwork in rough climates like Amazonian Brazil, Costa Rica, several Sahara nations, highland Ethiopia, Madagascar, Namibia, etc.  They are banged up and nicked, but they still work great, and they keep out moisture, keep out sand and dust.  In wet conditions I do keep them in a bag or case -- they will fog up inside if you leave them out in the rain overnight, but a couple hours in the sun will bake them dry again.  The lens quality is wonderful -- excellent light-gathering ability and crisp, broad image.</blockquote>