I bought four of these. One each for each of my three girls and my wife and I. They work as stated on the website. I had the girls promise not to drive or ride with someone under the influence.
My husband and his friends have used this for the past few months and it seems to be very accurate/consistent. Glad I spent a little more money and got this model. Worth the money.
I bought this several months ago and used it extensively to understand my ability to drink and how it affects my BAC. All of my friends at parties love to try it to see what their levels are. This is a great tool.
I bought this to test me ex husband before picking up and dropping off my children. It was court ordered when he got his privileges back to drive our children. It is very easy to use and gives me peace to know that my children will be safe. It is also very eye opening. I have used it when out and was certainly surprised to see what registers after having two glasses of wine or champagne. I'm very small and even though I have felt more than ok to drive it's shocking what registers on the bactrack. It definately keeps you in check and is a great tool.
I bought this product so that I pay attention to how much alcohol I am consuming. It has been great because I turned it in to a game with my friends so they all like to check their levels. When too high we are all able to say stay longer and there are no arguments.