JASTEK Portable Breathalyzer Tester with 1000mAh Rechargeable Battery, Personal Breathalyzer to Test Alcohol for Home, Party and Professional Use, Includes 10 Mouthpieces, USB Cable, and Storage Bag

This is a fantastic and accurate product. Its simple to use and I used it to let me know if I had to much to drink or if friends of mine had to much to drink. Rather be safe then sorry when it comes to not drinking and driving. Safety 1st. Thanks

This breathalyzer is very easy to use and gives a quick readout. I tested it before and after drinking and it works well. The price is right and it does what its suppose to .

Waste of money. Stopped working after a using a few times. Wasn't giving accurate readings and then wont even turn on. Out of return window so I contacted Jastek for warranty service. They asked for more information and then NOTHING! Won't respond to my followup emails. You can do better than these scammers.

I am happy with this product since it's quite easy to use and the readings are consistent. It's important to keep it charged though, otherwise you will start seeing BAC readings that are obviously wrong. I also like the fact that the instrument lights up green when the BAC is considered safe.

The JASTEK Portable Breathalyzer Tester is a compact and convenient device for estimating blood alcohol content (BAC). It's easy to use with a simple one-button operation and provides relatively quick results. While it's not a substitute for professional law enforcement testing, it can be a useful tool for personal awareness. However, accuracy can vary, so it's essential to follow the instructions carefully and understand its limitations.Its more like a fun thing to "check" with than something to be relied on before you drive as results can very even within just a few min.

Small size with multiple mouth pieces for people to use. Not sure how accurate it is but so far the readings seem reasonable.

Seems to work very well if you follow the directions. Keep in mind, this measures blood alcohol level so if you use it right after doing shots it's probably not going to read anything. When I'm feeling tipsy I give it a blow to see where I'm at. Depending on the results, I'll have another cocktail or a water.It's a great way to not let yourself go overboard. My party guests also got in on the action. It's fun and sometimes unexpected to find out who scores the highest.

The product works as advertised. The carrying case is a great advantage. Easily charges and easy to read results.