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 have purchased other(read: less expensive) breathalyzers before, but I am really impressed with this model. It's seems to be very accurate, and doesn't read a false positive if I breathalyze someone who hasn't been drinking at all after someone who has. I like to have people use this at any of my parties because I will not let someone drive if they are over a .05 (I know the legal limit is .08, but better safe than sorry). I love it!!!!
What's great about it: easy to use, accurate, no false positives,