Fits phone up to 6" screen size. Works with iPhones and Android devices. 3-Step Assembly. Assembled in less than 10 seconds. Just slide, flip, secure and enjoy. Securely packed in a protective sleeve. Easily fold to original state and slide in the protective sleeve when not in use. Asymmetrical biconvex lenses. 37mm in Diameter with 50mm Focal Length. New input method. Conductive Foam Button replaces the magnet switch of version 1. Works on both iOS and Android devices. Available in fun colours: Original Box colour. What is Google Cardboard Google Cardboard is a virtual reality (VR) platform developed by Google for use with a head mount for a smartphone. Named for its fold-out cardboard viewer, the platform is intended as a low-cost system to encourage interest and development in VR applications. https://youtu.be/CYwApgxCIIM