It is a true lighter,can fire your tabacco.Also it can helps you to operate with poker analyzer and marked cards cheat in poker games. 1.it can be used for all generations of poker smoothsayer and poker analyzer.This product is composed of a mercury switch control,it will close automatically if the product is not in a state level. lens distance:1.the lenses can see in the range 20 to 20 cm 2.Estimate working hours: About 40 minutes Specification: The lighter lens is composed of two lens, a battery, a magnet and a Charging clip How to use: 1.Turn on -----use a magnet in contact with the opposite side of the lens 2.Turn off use a magnet in contact with the side of the lens or let the lighter not in a state level. 3.The poker and the lighter lens must put in the allow working distance,then the analyzer will report the user the poker game result within 0.3second so that the user can decide to continue or give up the game.