BACtrack Mobile Smartphone Breathalyzer Mouthpieces (50 Count) | Not Compatible with BACtrack C6 and C8 Breathalyzers

Excellent device.Drivers in CA who are under 21 years old are DUI at BAC of **0.01%** (it's 0.08% for adults over 21 y.o.). Penalties: suspended license for 1 year; lots of expenses; huge increase in insurance rates.Bottom line: It's critically important for young drivers to know if/how much they can drink, and how long they need to wait. Hint: It's longer than you think. It's worth the extra expense to have an accurate unit, especially at low levels of BAC.The mobile app that goes with this breathalyzer does a great job of estimating the time when you'll be sober & good to go. You can save previous readings to the cloud -- or not.

These mouthpieces work perfectly with the machine that it was created for. They are good quality and easy to use fits. No no issues.

Work just as you would expect them too. Doesn't do anything special so can't really say I love it. They are just mouthpieces.

I bought two of these for my sons that are in college. I wanted them to be smart and responsible. I feel providing them with the tools might help them stay safe. This product works great and my boys use it and so do their friends. I am not sure if it has saved any lives but I feel better knowing that it is helping my boys make good choices.

Unbelievably accurate (it will say you are at 0.012 percent if you drink ginger beer and that you are dead if you use breath freshener). The app is simple to use and extremely helpful.

I bought these based on the suggestion by Amazon when I purchased my c6. These however do not work with it. Im sure they work fine with the intended analyzer but the suggestions are incorrect.

Best Amazon purchase period. Accurate and super helpful in watching my drinking. My liver is so happy I bought this.

I bought this not for the purpose of using it to determine if i will drive or not, but moreso as a gag when at home or out with friends (We Uber everywhere where I live).Anyways - I read multiple reviews of all products and ultimately decided on this one as it seemed to have the most accurate readings/positive reviews when compared directly to Police breathalyzer equipment.When this product arrived, I immediately tested it out - 0.000%. well, thats a good sign as a I had not started drinking yet.I took the product upnorth for the weekend, where it remained in the same temperature (72 F) and the same humidity (38%) for the 5 days I attempted to use it.I read the directions prior to using, morso because i wanted to know if you had to use the mouthpieces or not (you dont have to). After about 6 beers in 2 hours, I tried to use the BACtrack 30 minutes after my last beer and it read 0.001%.....impossible. After re-reading the directions - I had done everything correctly, so I replaced the battery questioning if the AAA provided had maybe lost some juice.I tried the BACtrack again after about 10 minutes - 0.300%. The max reading. what on earth?I tried to use the device for 4 days following this where it would only read 0.000%. No moisture had gone into the unit, it did not get wet, and I do not see any reason why the fuel cell would have become damaged or render the device inoperable.I'm completely disappointed and returning the product. I would be open to BACtrack sending me another device at their cost to test out and do a formal review for, but, aside from that - I do not forsee buying any of their products again in the future.