BACtrack C6 Keychain Breathalyzer | Professional-Grade Accuracy | Optional Wireless Smartphone Connectivity | Compatible w/ Apple iPhone, Google & Samsung Android Devices | Apple HealthKit Integration

I use the breathalyzer as another tool to help stay sober. I found that by sending a daily snapshot to a family member was a good way to stay accountable. It sounds too simple to be helpful but it really has.Setup was simple. Small and portable. The app gives simple instructions on when to blow and then provides a screen detailing your reading and estimated time to become sober. I take a snapshot with my phone and send it via text to my folks.The "Professional Calibration" is not really necessary if for personal use. The accuracy has not degraded over the past year.PROS✅ Small and simple design✅ Durable✅ AccurateCONS❌ Requires "Professional Calibration" periodically

This is surprisingly accurate for such a smaller and portable device. I have it on my keychain and it doesn't even make my keys feel too bulky or heavy. The build quality is really solid too, it does not feel like a cheap little product how most keychain electronics might feel. Works very quickly and gives you very accurate down to like 3 decimal points how much your blood alcohol content is. Great way to keep you and your loved ones safe! Also great conversation starter for me to bring it with to social events that I go to.

It works well. It’s accurate and easy to use. My wife and I both have one and we use it when we’re out having some fun.

I purchased the BACtrack C6 hoping for an easy, reliable way to monitor my BAC, but I was left extremely disappointed. After using it just once, the device completely stopped working. The initial setup was straightforward, and it seemed to function fine during that first test, but shortly afterward, it wouldn’t turn on at all.I expected much better durability for the price, but clearly, it didn’t hold up even for basic use. Given the brand’s reputation, I thought this would be a dependable product, but unfortunately, my experience has been far from that. Amazon wouldn’t return the product. I would be cautious about buying this device, as it may not be as reliable as advertised. Definitely not worth the investment based on my experience.

Right after taking a drink it is extremely inaccurate.

BACtrack C6 Keychain Breathalyzer is a great! It’s small enough to fit on my keychain, so I always have it when I need it. Super easy to use—just turn it on, blow, and get a quick, accurate reading.I really like that it uses police-grade technology, so I know the results are legit. It also estimates how long it’ll take for my BAC to drop to zero. Plus, the Bluetooth feature lets me sync it with the app for extra tracking, which is pretty cool.Overall, it’s a great little device for making smart choices after a night out. Definitely worth having if you want to be more responsible!

This Breath Alcohol Concentration (BAC) tester is highly effective. It provides stable readings, eliminating frequent fluctuations. Its compact and lightweight design makes it convenient to carry. Additionally, an app integration option is available for enhanced functionality. The tester requires only a single AAA battery, which provides extended battery life. While its absolute accuracy may be questioned, its performance is remarkably close to accuracy. For individuals who enjoy consuming alcohol, this device serves as an invaluable tool for ensuring compliance with driving regulations.

I didn't want to spend a lot on a alcohol-level reader because I wasn't sure how often I'd use it and not sure how accurate any of them are so I bought this one because it was the cheapest by the company that seemed reliable and because it was so small as to be easily carried around in my pocket and because it allows you to see your results and track your history on your iPhone or Android by downloading the app.Also, I figured it was an easy thing to lose while out drinking, so didn't want to spend a hundred bucks on it.Setting up takes just a second and you can charge it with the USB port, so that's fast. It's intuitive so you can pretty much go from there. To test it, turn it on and check; it should be 0.0. Start drinking - wait 15-20 minutes - and take your first reading. The number should go up, maybe 0.01 or even 0.02. The more you drink, the higher it will go; that's how you know it's working.As to accuracy, I think so. There were two of us and mine rose in level slower than his; I weigh 30 pounds more than he does so it takes more alcohol to get me drunk than him, I think, plus I have a higher tolerance due to heavier use over the past 40 years, lol.The most important things to remember, as they will remind you in the instructions, is that you need to wait 15-20 minutes after each drink to get a good reading; if you check your level earlier, your body hasn't absorbed it enough. Don't worry that if you don't take a reading right away it won't be accurate; it's the opposite: you need to wait for it to be accurate. (Sort of the opposite of waiting 30 minutes after eating to go swimming, lol.) Also, this is for fun; no guarantees that you're not drunker than they say.Also, remember that you're expecting levels to be 0.0x, not 0.x, know what I mean? In many states, a 0.08 level will get you a DUI. NOT 0.8. If you blow a 0.8, you're already dead. So if you want to get the highest number if you're out with friends and think it's funny to see who gets drunkest, stop at 0.14, not 1.4. If you blow a 1.4, you're already dead.The only problem I've had is I haven't been able to figure out how to get the tester to switch back from when you use the app to just getting the result from the tester. You should be able to test it both ways, I think; not using the app you should be able to just test and if you want to store results and get other information, you switch the tester to a different setting. It's in the instructions but haven't gotten to it yet.The results seem accurate - the numbers went up the more I drank. Again, wait before you test or you'll get a crazy number, and that number might be really high (I think because the alcohol is still partly in your mouth or something like that). Also, breathe deep before you blow. I don't think you have to breathe really, really deep, but even if you do, it won't affect your result adversely.The higher-priced products may be more accurate and/or give you more bells and whistles, so if you plan on using it often or for purposes other than just for fun (or, if you drink a lot all the time and want to have something reliable that might last a long time, buy those).I'm glad I have this; I should've purchased one years ago. It does make me more aware of the effects of each drink and now I can measure how my level changes compared to how I feel after each drink.