Amazon.com: Swarovski Optik AR-B VPA Phone Adapter Ring for Binoculars and BTX : Electronics
Swarovski VPA Variable Phone Adapter w/ AR-B Ring for Binocular, BTX 44270&44216 | eBay
THE BIRDER'S STORE on Twitter: "'Phonescoping' is becoming increasingly popular with #birders. The @SwarovskiOptik 'VPA' is a high quality, variable adapter that accommodates most #smartphones and provides a tailored connection to #Swarovski
Swarovski AR-S VPA Adapter Ring for ATX/STX with 59mm Eyecup Diameter 44224 For Sale - EuroOptic.com