This BACtrack S80 Professional breathalyzer is DOT-/NHTSA- tested and approved and designed for professionals and users who requires dependable BAC (blood alcohol content) results. Police-grade Xtend Fuel Cell Sensor Technology ensures accurate readings.
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i was expecting something better for the amount i spent. the material felt cheap and light in the hand. regardless it read the result pretty quickly but my son blew into it to see how high he could get it and now the device doesn't read accurately. i called tech support and they want me to send it to them to have it serviced which was almost half the cost of the machine. apparently the warranty doesn't cover anything.
i returned it to best buy and cut my losses. i'll do more research before buying another breathalyzer online.