In the film, we often see someone wearing a pair of sunglass in the casino. If you consider the sunglass as a common one, I should tell you that you are wrong. The sunglasses they wearing are special ones which can see invisible marks in the playing cards, and help forecast the result of games. This kind of sunglass is made from special material and has no difference from normal sunglass in appearance, only when you are exposed in certain circumstance can you learn the difference. Our company produces some kinds of infrared sunglasses for you customers, if you do not want to be cheated in the card games, book it now, we ensure that you will be surprised by the functions.