4 cameras T-Shirt hidden infrared lens which can work for all levels of poker smoothsayer and poker analyzer. It used for all generations of poker smoothsayer and poker analyzer. It is a true shirt but can help the user to operate with poker analyzer. 1.4-cameras T-shirt can scan the cards more clearly and exactly 2. scan the cards within 20-35cm distances. 3..Fashion style and perfect for playing poker game in hot summer 4.Estimate working hours: About 2 hour Specification: It contains 1 T-shirt ,one cable and one charger