Zero Tube 10x25 Waterproof MonocularThe Zero Tube monocular is the smallest, lightest, most durable, and highest quality way to seek the unseen. Whether youre traveling in the backcountry in inclement weather or accidentally drop your Zero Tube in a puddle on a neighborhood stroll, this monocular is as rugged as they come. Submersible for 30 minutes in up to 3 feet of water, meeting IPX7 waterproof criteria, Nocs dare to go. With a medical grade O ring assembly, and injected with inert