This Adapter Ring is designed for use with binocular systems or spotting scopes from Swarovski Optik. It is easy to fit and helps connect your binoculars or spotting scope to a smartphone. It is compatible with CL Companion, EL, EL Range, NL Pure, and SLC binoculars, and BTX spotting scope.Swarovski Demo ProductsSwarovski demo products have been slightly used for display or demonstrations by Swarovski during outdoor industry events. They may exhibit minor cosmetic imperfections that will vary from demo product to product. Swarovski demo products and their included accessories are guaranteed by Swarovski to operate to the standards for a new product. In rare cases, one or more accessories may be missing. All Swarovski demo products are covered by the Swarovski Limited Lifetime Warranty (View Warranty)