Features:Christmas Google Cardboard virtual reality 3D glasses for smartphonesGreat and creative christmas gift for your friends and yourselfBe full of cheerful Christmas atmosphereEveryone can experience virtual reality in a simple, fun, and inexpensive waySimple DIY installation processBlack magnets to control the orignial google cardboard app (android only)Suitable for 4-5.5 inch cellphoneSupports LR format 3D videos besides the usual video formatSupports VR game or appWith Cardboard App, you can DIY a virtual reality glasses, like Oculus Rift VR glassesAndroid OS:search "Cardboard" in Google Play (needs Android 4.1+)IOS OS:search "Cardboard" in App StoreVersion: Unassembled DIY Cardboard Kit, 1~2 minutes assembly.Note: Flat lens are faced outward.Material: Cardboard + Resin LensCompatibility: iPhone, Samsung Phones, Google Nexus 4/ 5/ 6, HTC One, Xiaomi Mi3 and other brand phones with 4-5.5 inch screenSize: 180 x 140 x 40 mm / 7.09 x 5.52 x 1.58 inchNet Weight: 56 g / 1.98 oz