Use it for personal use and it works!

Works great, a real plus to have to double check your levels after going out. Many people don't understand how out of control strict DUI laws are becoming....they are getting totally out of control in many states now....we are becoming like a police state and its quite scary in places where you don't even have to be .08 to get a DUI...it can be left to the discretion of the officer and also many states are starting to enact .05 YES .05

The great thing about this device is that you can learn through the use how levels quickly change, and go down dramatically as time passes. That way you can understand your personal tolerance and metabolic rates, so that you can be sure that when you leave, you are well below .08 after a nice evening out. Getting to be a necessity to combat the zealots who don't know when to stop and have a little balance in life, and when you start talking .05 you are definitely in the area of ridiculousness.

Don't know what others are talking about as being bulky, it fits nicely into the carry case and is quite compact. It fits very nicely into the corner of your glove compartment. Startup time is reasonable, results accurate. Like many have said don't use it right after alcohol consumption. Have some water wait a few minutes then use it.

Great

It does what it needs to"”give an approximation of a person's blood alcohol level, but it is sufficiently variable on repeat testing within a few minutes of an earlier test, that I would not trust it, if my blood alcohol lever was close to the legal limit. If one wanted to avoid a DUI, if stopped, they probably should not drive if their measured breathalyzer alcohol level was over 40 [80 is legally intoxicated]. Also I would strongly recommend a good mouth rinse and gargle with water before using after drinking as, even a tiny amount of beer, sine, or spirits remaining in the mouth will lead to a reading compatable with gross intoication, even if the person's true blood alcohol level is at or close to zero.

I researched breathalyzers thoroughly and decided on this AlcoMate Prestige based on the fact that it's self-calibrating and quite accurate. However, the product is not exactly as pictured by Amazon. The picture of the product as sold by Amazon shows a silver breathalyzer, a few mouthpieces, a small pouch, and a larger carrying case. The product as delivered did NOT include the larger carrying case. Note that the same product without the larger carrying case (i.e. as I received it) is available from other sellers on Amazon for $20 less than the Amazon prices.