I AM CARDBOARD® EVA Foam 45mm Focal Length Version Virtual Reality Viewer Inspired by Google Cardboard (WITH NFC) - Black (Wireless Phone Accessory) 5
The glasses I use a Sony Xperia Z1. In addition, a slight modification was necessary. The hole in the housing for the camera can be cut with scissors, because the existing Samsung models does not fit, but for the Sony. Furthermore, should the left and right sides of the glasses to be replaced, because the magnetic sensor is located on the other side. The total is loosely done in five minutes. Then everything works fine.