First off there are plenty of reviews on this item all over the itnernet. I use this with friends more as a novelty thing when we are out together or whatever. If you use this thing multiple times in a row it will spit out drastically different readings. I tried it last night and it said i was .009 then told me 2 minutes later i was 0.00, then .004 then .000? Not ayt all accurate i wouldnt rely on this thing to tell me not to drive somewhere if i had event he slightest bit of alcohol. I just dont drive if i even have a drop of alcohol a DUI is not worth losing your job, money, family issues and more. Possibly even worse killing someone even if its an accident that you didnt cause and your involved they will check you and if you register anything on their accurate BAC testers you will get hit with DWI or DUI. The moral of my review DO NOT RELY ON THE READINGS FROM THIS THING!! Its all over the place.

Love the product. Appears accurate and is easy to use. Although I like the fact you can use the app from your phone, I think it would be great if it also had a readout on the device where it wouldn't be required to use the app or your phone to complete the test

I really love how the breathalyzer connects to my phone and not only states your BAC, but also predicts when you will be sober and how you may feel. The only downside to this product is that there is a glitch that happens here and there. It happens when you are told to"take a deep breath" and then the "blow now" screen should pop up, but sometimes it doesn't. My tip would be to delete the running app and try again, other than that, its a really nice tool and a greta price!

Small enough to carry with you or for your son or daughter for those occasions when you are not sure you are ok to drive. Easy to connect to your phone. Test you, take a screenshot and you have proof you are clear to go.

This little safety device on a key chain can prevent you from ending up in chains. It gives you a clear picture of your BAC. Keep a spare AAA battery with you it is power hungry.