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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This model is the real deal. I have a friend who's a cop and we compared this model with the police one, which was much bigger, and the results were almost identical. I tested first after just one beer: 0.011 %BAC and 0.010 on the police model. Then after 3 more drinks over two hours, 0.045 on the S80, and 0.043 on the police model. I'm impressed this is available for only 200 bucks. Good technology.