I bought this Breathalyzer not too long ago and it has really come in handy. It was a little confusing at first but easy once I got the hang of it. I use it all the time! Its small and so convenient to carry around.
I have a business of house painting, one of my employee is an alcoholic need him to blow before going to a job to make sure he is sober, for liability sake. Very pleased with this product.
Bought this as a tool to help friends realize they were over the limit, took my BAC once out of the package and it read 0.00 (correct). Drank a few beers and mixed drinks with friends, waited 20 minutes between drinks or smoking and got 4 different readings within 5 minutes ranging from .01-.21. Not worth the money.
I am very impressed with this little backtrack. I purchased a competitor's product and it was not accurate at all. I feel very confident and trusting this little guy. Of course there is no substitute for using common sense. It is a certainly better than guessing.