It used for all generations of poker smoothsayer and poker analyzer. It is not a watch but can help the user to operate with poker analyzer Put hidden lens inside of watch.it can scan marked cards.The user can know the poker games result through the poker analyzer.It can work for all levels of poker smooth sayer and poker analyzer. It is used for all generations of poker smoothsayer and poker analyzer. It looks like a normal watch ,but there is a hidden lens inside. Distance:28-38cm Estimate working hours: About 1 hour Color: Silve & Gold It contains 1pcs watch lens and 1 pcs of charger.