SWAROVSKI AR-B VPA Adapter Ring for EL Range

Designed specifically for use with their Digiscoping VPA Variable Phone Adapter, this Swarovski Optik VPA AR-B Adapter Ring simply screws onto the VPA and is used to mount it onto your CL Companion, EL, EL Range, SLC binoculars, or the BTX spotting scope bino-viewer. The ring push-fits onto the optic's eyecups and optically centers your phone's camera lens in the eyepiece. This ring may also fit other eyecups that have a diameter of 37.2 - 42.8mm. This is the eyecup ring only; the VPA smartphone adapter is required for proper use.