Description: This is a Plastic more Solid build of the 3D VR head mount Glasses *NOTE: This item does not have the Magnet Parts so it can not control like the Google Cardboard 3D. But you can use this item view 3D movie and 3D game requiring a controller on your cellphone. Diameter 30mm Pupil Distince PD adjustable Focal Distince FD adjustable Max size fit 16.5 cm x 8.5 cm This item does not contain NFC component. Cardboard applications can be run on most modern Android phones. Phone needs to run Android 4.1 (Jelly Bean) or more higher versions of Android. It can work with Arduino Android ISO system cell phones which can be 4 - 6 inches. FL can be adjusted max size of the phone can cover : 85x165mm Diameter of the lens : 34mm FL of the lens: 75mm Myopia: less than 600 degree. NFC : not included Package included: 1 pcs x Head Mount Plastic Version 3d Vr Virtual Reality Glasses