The Swarovski AR-S VPA Adapter Ring allows you to mount a smart phone (in combination with the Swarovski VPA) to a ATS/STS, ATM/STM, STR spotting scope with an eyecup diameter of 55mm so you can capture a quality image.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)