This device was a great buy. It has an amazing battery and logs all information.

I bought this recently when I realized it would be much less expensive to spend $100 now than thousands later. First, it is kind of fun. It has you guess your BAC first before blowing. The idea is to stop, take a look at yourself -- your vision, your speech, etc. Think about it and then blow, then it compares your guess to your actual. The goal is to eventually get better at determining what your BAC is without this tool, so that if you find yourself without it, you can make a smarter decision about whether you're too drunk to drive. It's very small and easy to use. Provides an estimated time to sobriety as well. I found it very informative -- I never realized how quickly I could get above .08 if I had very little food in my stomach. It definitely made me realize that if I'm going to drink, I need to eat a lot or I have no chance of driving home safely.

This device is compact, accurate and stores BAC readings on the free downloadable app. The device powers up with ease with minimal wait time (count down) to administer reading. Highly recommend this Breathlyzer.

The BACtrack mobile is a great device as it is small, accurate and easy to use. It also holds the charge for quite some time and is a great way to be sure you are under the limit. These days we all have too much to lose and it’s not worth taking any chances.

I have a BAC reader connected to my car for obvious reasons. I purchased this to make sure that I won't blow anything over .000 the next morning which would land me in deep trouble. If u use this BAC reader before bed it will tell you what time you will be at .000. So far its been right on and I have not had any problems starting my car in the morning which has saved me more money then I want to think of. I highly recommend this devise.