Focus Viewmaster ED 16-48x65 Spotting Scope - It is a very bright spotting scope with a large and sharp lens, Bak-4 prisms, that are considered one of best type of porro prism as they are made of superior optical glass to produce a clear image together with an ED lens. This spotting scope reproduces an incredibly crisp and natural image. The close focus distance is just 5,5m. The dual focus mechanism makes it easy to focus fast and accurate to ensure that you never miss any interesting objects. A large field of view makes it easy to find and follow birds. The field of view is 42-19m at 1000m. It is waterproof and nitrogen gas filled which means that condensation never forms in the spotting scope. Focus Viewmaster ED comes with a practical stay-on case for protection and carrying. So that your spotting scope always is protected even when you use it.