Featuresr a simple and inexpensive diy google cardboard v20 virtual reality glassesr the 3d glasses comes with a protective cardboard sleever works with most smart phones includes iso and android smart phones etc if you are unsure that your smart phones compatibility with google cardboard apps don39t hesitate to send us an emailmessager compatible with smart phones up to 6 screenr easy to use assembled in less than 10 seconds just slide flip secure and enjoyr simply slip