What is the new invisible ink stainless steel watch camera and what is the new invisible ink sides bar-codes marked playing cards.
New invisible ink bar-codes marked playing cards can be played over 1 month and the bar-codes will be still invisible. While, the old invisible ink marked cards can't do it! They are top good quality of products. That means the watch scanning camera can read barcode easily and quickly.
New invisible ink stainless steel links watch cameras can work with K5 poker analyzer, K4 poker analyzer, CVK poker predictors and PK King poker cards readers. Its scanning distance is about 20-30cm or 25-35cm and its battery life is about 40 minutes. In addition, the scanning distance of this watch scanning camera can shorter than 20cm. Therefore, even you hold the marked cards on your hand, it also can be read by this watch camera.