Swarovski Demo Products Swarovski 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). Designed specifically for use with the Swarovski Optik VPA 2 Variable Phone Adapter, this VPA 2 Smartphone Adapter Clamp Ring clamps onto the eyepiece of ATX/STX, ATC/STC, ATS/STS, STR spotting scopes to center the phone's camera and secure the phone to the optic.