B Level infrared contact lenses

B Level infrared contact lenses is a very good choice for some poker players who want to know how does the contact lenses and marked cards work.

This kind of contact lenses may not as good as A level contact lenses. It can see invisible marks too but it see around in pinkish color. This kind of lenses may change your eyes' color if you have blue or green eyes and can not last as long as A level contact lenses.
Of course, the price of this kind of contact lenses will be much cheaper than A level contact lenses.
On request of different people, two kinds of B level contact lenses are available.
one: with this kind of contact lenses, you can see the marks very strong and see the around environment not so clearly.
Another: with this kind of contact lenses, you can see the marks not so strong but you can see the around environment not so dark.