The distance between the phone and the lens design can be adjusted so that it suits for people with different visions. Secret images，other people can not see anything except to the wearer himself convenient to use for watching at anytime anywhere whether sitting，lying or standing  You will not feel visual fatigue and dizzy even you use long time with the resin lens  3D picture of the screen effect is super good，awesome feeling  Only can look at the left-right 3D film  Suitable for 4.7 - 6 inch screen mobile phone