Best Breathalyzers of 2026

"I really appreciate how small and easy to carry this device is. It’s helped me become more aware of my alcohol intake and lets me track my BAC over time using the app. Setup was simple, and I like that it charges quickly via USB. While I mainly use it for fun and self-education, it’s made me much more conscious of how each drink affects me."

"This little tool is perfect for nights out—it’s so compact and discreet that I can check my BAC without anyone noticing. The readings seem very accurate and it’s a breeze to use. I feel much more confident knowing my alcohol level before deciding to drive. Honestly, I wish I’d bought this years ago."

"At first, I felt peace of mind knowing whether I was safe to drive, but after a few months, it seemed less reliable. When I was clearly drunk, the reading was very low. I discovered it needs calibration every 6 months, which is inconvenient and costly. If calibration were simpler, I’d recommend it, but as it stands, I’m not confident in the results."

"I've always been cautious about driving after drinking, and this device has given me peace of mind with its accuracy. The build quality is excellent, and it fits perfectly in my car. After using it for months, I feel much more confident in understanding my BAC and making safe decisions. I've even impressed my friends with how closely I can estimate my level before checking. For me, it's been totally worth the investment."

"My wife and I agreed this was a smart purchase, especially since there have been times when we've questioned whether I'm legally safe to drive. The S80 is reliable and simple to use, and the results are consistent and trustworthy. While the price is a bit steep, the confidence in its readings outweighs that for us. I also plan to let guests use it at gatherings to help everyone stay responsible."

"I tested the product by drinking and checking my BAC after each beer, and the results were very accurate and increased as expected. I appreciate how quickly I can get results and the portability of the unit. It’s become an essential part of my routine when drinking socially."

"I decided to buy this breathalyzer after a close call with a friend’s DUI. It matches professional-grade devices perfectly and gives identical BAC readings every time. Now, I always have clear proof of my BAC level, which has made me realize you really can't rely on just how you feel. I love the reliability, portability, and ease of use—so much so that I never drink if I forget it at home. If you're on the fence, trust me: absolute accuracy matters, and this device delivers."

"I love how compact and straightforward this breathalyzer is. It worked the first time right out of the box, and even picked up mouthwash alcohol when my family tried it! The device tells you exactly how long to wait before driving, which is a fantastic feature. I also bought the case, which keeps everything organized. For peace of mind when deciding whether to drive or call an Uber, this is a small investment compared to the potential cost of a DUI."

"Battery life is excellent, and it's incredibly easy to use. Accuracy is spot-on based on my tests before and after drinking. I genuinely believe everyone should own one—it’s a real lifesaver."

"I've found that after learning how to use it correctly and waiting long enough after drinking, this breathalyzer gives me consistent and repeatable results. There’s a bit of a learning curve, but it’s become a valuable tool for me to gauge when I’m actually safe to drive. It’s helped keep both myself and my friends out of trouble."

"I keep this device in my car for convenience, and it’s very straightforward to operate—just turn it on and blow when prompted. Since it was tested to police standards, I feel confident in my readings. For the price, it’s a great way to make sure I’m safe before getting behind the wheel."

"While the idea is good, I found this product to be a bit too unpredictable for my liking. Sometimes, even after several drinks, it would still show a 0.0 BAC, making me doubt its accuracy. I think it could give a false sense of security to someone unaware of its quirks."

"As someone who drives professionally, I've found this upgraded breathalyzer to be far superior in build and reliability compared to the smaller, square models. I appreciate the confidence it gives me, especially after a night out—no false positives, and I always get reasonable results that help me make safe decisions."

"Speaking from three decades as a police officer, I was thoroughly impressed by the accuracy of this tester. As long as you wait 20 minutes after your last drink and avoid things like gum, the results are spot on—just like the standard procedures in law enforcement. Highly recommend for anyone who wants dependable readings."

"I tried this product to check my BAC during different drinking occasions, and found it to be remarkably precise. My wife, who didn’t drink, always showed 0.000, while my levels appropriately increased with each drink. The device even adjusts its reset time after high readings, which shows thoughtful engineering. Overall, I think it’s a useful and trustworthy tool."

"I've found this breathalyzer to be extremely accurate and simple to use, with results coming in just seconds. Compared to my Alcomate Premium, this model is much faster to warm up and analyze. The BACtrac has become my daily go-to, while the Alcomate is now just my backup."

"This device is a must-have for any car or bag. I love that I can show the numbers to friends and maybe stop someone from driving when they shouldn't. Absolutely worth the investment."

"It worked fine at first but then stopped functioning after a few uses. I’m now looking into returning it, so I’m a bit disappointed."

"After using this keychain breathalyzer for over five years, I can confidently say it’s a cost-effective, reliable device that served me well. While it’s not the most rugged, the accuracy and value make it impressive for its price. Even after repeated use, it consistently provided results that made sense. I’d recommend it to anyone who needs a basic, practical breathalyzer."

"I bought this for my wife to keep in her purse, and it’s given us peace of mind whenever she goes out. It’s inexpensive, fits easily in a purse, and is reliable for the price. While it’s not as precise as police models, it’s been accurate enough to ensure she’s safe to drive. It’s a small investment that offers a lot of reassurance."

"The BACtrack Keychain is a great value gadget as long as you understand how to use it properly. It’s consistent if you follow instructions and wait between tests. I found it to be a helpful educational tool for understanding how alcohol affects me, and I’d recommend it to anyone wanting a rough idea of their BAC without spending a lot."

"I bought this to track my BAC and test its accuracy. Assembly was simple and the variety of included tips is a plus. The manual explains BAC levels and button functions, but I wish it described the blowing process better—you need to blow for over 11 seconds. Once I figured that out, the readings were pretty accurate and matched my level of intoxication. Overall, it’s a solid purchase, but better instructions would be helpful."

"This is my second time purchasing this device. I replace it every couple of years because it’s so useful. It’s easy to operate and we keep it in the glove box for convenience. Sometimes, we even use it for fun with friends to see who’s more intoxicated. Definitely a must-have for anyone who drinks."

"I have an ignition interlock due to a previous DUI, and this breathalyzer has helped me understand my impairment better. It’s very accurate and lets me know when I’m safe to use my ignition interlock. It’s valuable to see how each drink affects me and how quickly my body processes alcohol. Money well spent for peace of mind and safety."

"This device is excellent for checking alcohol levels. It’s become a fun activity at our parties, and it really helps everyone be more aware of their own limits. I always remind people to be responsible and not use this to decide if they should drive."

"Using this breathalyzer has been way more enjoyable than I expected! Before leaving gatherings, we each check our BAC and find out who’s the most sober. It’s a fun and eye-opening way to wrap up the night."

"I bought these replacement mouthpieces after everyone got sick last time from sharing. Now, I can swap them out easily, which makes using the breathalyzer at parties much safer for everyone."

"This breathalyzer is extremely easy to use and provides fast, accurate results every time. I compared it to another trusted model and was impressed that the readings were consistent. The unit is compact and portable, so I can take it anywhere. Considering the reliability and value, I’m very satisfied with my purchase."

"I purchased these disposable mouthpieces for my breathalyzer and I’m really happy with them. They’re comfortable, fit securely, and the quality material prevents leaks. The disposable aspect gives me peace of mind about hygiene, especially when sharing. The multi-pack ensures I always have replacements—definitely recommend for anyone wanting to keep their device clean and accurate."

"Great performance and durability for the price. The breathalyzer is solidly built and super easy to operate. I’m very pleased with how reliable and straightforward it is to use."