Each Kit Includes:1. Precut cardboard2. Biconvex lenses x 2pcs3. Magnets x 2pcs4. Pairs of Velcro5. Rubber band x 1 pcsPlease Note: Cardboard applications can be run on most modern Android Android phones. Phone needs to run Android 4.1 (Jelly Bean) or more versions of Android. You need a smart

Each Kit Includes:1. Precut cardboard2. Biconvex lenses x 2pcs3. Magnets x 2pcs4. Pairs of Velcro5. Rubber band x 1 pcsPlease Note: Cardboard applications can be run on most modern Android Android phones. Phone needs to run Android 4.1 (Jelly Bean) or more versions of Android. You need a smart phone to work with this kit. 5 inch is perfect for this product, if your phone's screen size is more than 5.2 inch, maybe it's not fully compatible with this cardboard.Here is a list of the phones that google has already tested that are compatible with cardboard:- Fully compatible Google Nexus 4 and 5- Motorola Moto X- Samsung Galaxy S4 and S5- Samsung Galaxy NexusPartially compatible Magnetic input not workingHTC OneMotorola Moto G Magnetic input not working head tracking/rendering issuesSamsung Galaxy S3Except above tested phones, other smart phone also can use this cardboard to enjoy 3D movie, but can't play the google cardboard games, and your phone width have to be under 75mm, below 5.5 inch.