vision at all times.Waterproof and nitrogen-filled.Spectacle eyepieces also provide those wearing (sun)glasses with an optimum field of view.A stable tripod thread ensures steady viewing at all times.In

vision at all times.Waterproof and nitrogen-filled.Spectacle eyepieces also provide those wearing (sun)glasses with an optimum field of view.A stable tripod thread ensures steady viewing at all times.In