Swarovski AR-B VPA Adapter Ring for Binoculars, EL Range, BTX, 37.2-42.8mm Eyecup 44216

The AR-B VPA Adapter Ring allows you to mount a smart phone (in combination with the Swarovski VPA) to a CL Companion, EL, El Range, SLC, BTX binocular with an eyecup diameter of 37.2mm-42.8mm so you can capture a quality image.