I thought I could use them with my 3D projector and 3D screen, but I couldn't see any of the 3D objects I had colored red and blue in the lenses and I saw a little from that. So I'll try again with a permanent marker. But please make sure you research it before purchasing. They were the perfect size for all of us and the light weight made them very comfortable to wear. So read about the product again before you buy it.
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