THE BIRDER'S STORE on X: "The NEW @vikingoptical Swallow Smartphone Adapter is now in stock. The perfect universal option for attaching a #smartphone to binoculars, monoculars and spotting scopes with an eyepiece
GoSky Cell Phone Adapter Mount – Fits Almost all Smartphones – GoSky Optics Official Online Shopping Store
Amazon.com: GOSKY Smartphone Adapter Mount Regular Size - Compatible with Binoculars, Monoculars, Spotting Scopes, Telescope, Microscopes Fits almost all Smartphones on the Market Record Nature and The World : Electronics
GoSky Cell Phone Adapter Mount – Fits Almost all Smartphones – GoSky Optics Official Online Shopping Store
F002 Universal Smartphone Adapter for Binoculars/Monoculars/Microscope/Telescope - Apexel