I have purchase these glasses from amazone. After purchasing the vr box, I thought that tis tantra 3d vr box will be nice but the tantra 3d vr box is same as the normal vr box. The quality of product is cheap. The price is too high then the quality. It doesnot feel any real. Tantra 3d vr box is no good then the normal vr box. The lense quality is same. More over the design is different from the normal vr box. I don’t suggest this cheap box to anyone. I pefer samsung or procus. Thair quality and the reality is qiute amazing.