TNP Google Cardboard Kit 3D Virtual Reality Glasses DIY Valencia Quality Tool Compatible with 5-inch Screen Android and Apple Smartphone Easy Setup Machine Cut Construction 25mm Lenses A simple and inexpensive DIY Google virtual reality glasses Installation process is simple and can be completed within 3 minutes Can control your phone with the magnets; Supports LR format besides the usual video format Suit to most smart phones with up to 5" screen; all function works on both iOS and Android devices. (compatibility mainly depends on if the VR app is created using Google Cardboard SDK Biconvex lenses of 25mm in diameter and focal length of 45mm bring you a wider view and let you get more immersive experience from your smartphone screen