Review Content Better to be safe than sorry It is great to be able to determined your Blood Alcohol level BEFORE getting behind the wheel. Do not buy this I use this product when I drink and for this product being [$], you think it would be accurate. However, this product is nothing close to accurate, if you are going to buy a portable breathalyzer than you need to be spending over a hundred dollars and invest in the quality. This product is so annoying and a piece of junk. If it is not giving you some BOGUS BAC count then it is reading an error. Please do not waste your time buying this product! Highly recommend This is a great device. I love that it can easily be stored in my purse or glove box in the car. It is easy to use, easy to read and gives very accurate results. My friends all use it when we are out, too. I highly recommend this to anyone that likes to go out and have a few drinks. I would much rather pay for a cab ride home vs. a ride down to the police station for a DUI A must have item I love it. It encourages responsible drinking and is the hit at every party. Why does everyone not have one? Way better than getting a DUI - I know. Takes your breath away!!!!! Outstanding product!!!!! Piece of junk This product does not work!! I was able to use it twice. And now everytime after it just keeps say error. Ive tried several times to reset the device and it just keeps saying error. Save your money, dont waste it on this! Pocket Breathalyzer is great The only drawback is that you need to wait about 10-15 minutes, or drink a glass of water before using it. If you have just taken a sip of beer or mixed drink then the alcohol is still on your breathe and in your saliva Perfect Gift ! bought for my husband who loves happy hour, this helps determine if he gets a cab or drives himself! READ THE INSTRUCTIONS You will probably do it wrong if you dont read the instructions first. It seems to be working. Pocket Breathalizer Still getting the hang of it you have to really follow the directions to get a consistent reading, otherwise its all over the map.