For Google Cardboard Head Mount Plastic Version C50 Universal Virtual Reality 3D & Video Glasses for 4~7" Smartphones 3D glasses for phone -Universal Virtual Reality 3D & Video Glasses for 4~7" Smartphones - Uses ABS and spherical resin lens materials without stimulation plastic sheet, environmental. - Compatible with 4"~7" mobile phone.- 3D picture of the screen effect is super good, awesome feeling. - Secret images, other people can not see anything except to the wearer himself. - Convenient to use: can watch at anytime anywhere whether sitting, lying or standing Note- Only can look at the left-right 3D film.:.