• This highly accurate device is FDA cleared and sells for far less than competitive breathalyzers with similar accuracy ratings
• The alcohol tester is small light weight and includes a micro light and a key chain
• Two AAA batteries are included and will provide hundreds of measurements
• Measures your alcohol level in seconds
• If you see the red light, don't drive tonight

within a week or so it completely stopped working. I hold down the button and it shows a solid red, meaning high alcohol concentration, even though no one is blowing into it.

I got this device to test myself before I drove after drinking, like every other paranoid driver. It worked like a charm for about a month of two, then it ceased to calibrate when turned on, and stayed on the red <.08bac forever. So basically it became worthkess after a short while. But for fifteen bucks, what do you expect?

This was a great stocking stuffer and lots of fun throughout the Christmas party. We didn't have anything to calibrate the results so I'm not sure how accurate it is - but it seemed reasonable. Hopefully it will be a gentle reminder not to drive after drinking.

One note - don't take a big gulp of alcohol and immediately test yourself. You'll show as highly intoxicated even after just one drink. Wait a few seconds - that seemed to produce more reasonable results.

This tester seemed to work OK at first, but only lasted for about a week. Now it seems to have lost calibration and is basically useless. Save your money and buy a better unit!

I would not trust any device, as far as drinking and driving. However this little tester really does work. I drank one Vodka drink and the tester gave me a yellow light. Red is the next level up.

I tried everything i.e. brushing my teeth, eating candy, even drinking milk. No fooling this tester. The light remained yellow.

Best advice don't drink and drive! duh! I don't think the CHP would let you off the hook, if you told he or she that your tester said it was ok to drive.