We all like to have some fun on a night out after work or even over the weekend, and most of the time, there\u2019s a significant amount of alcohol intake involved. Alcohol always helps get people loosened up and in the mood, but the problem comes about when you start making really bad decisions when you\u2019re tipsy or even drunk. A great way to avoid this is to always keep track of your blood alcohol content level. The Bactrack C6 keychain breathalyzer helps you do exactly that, and thanks to its small size, all you need to do is attach it to your bunch of keys, and you\u2019ll be able to move around with it everywhere. It takes up second position on our best breathalyzer list, and we suggest you get on with the rest of this review to find out why.\r\n\r\nWhy We Like It - BACtrack Breathalyzer Professional Grade Smartphone Connectivity\r\nThanks to BluFire fuel cell sensor technology, you can now rely on the BacTrack C6 keychain breathalyzer for police grade accuracy whenever you\u2019re looking to find out your blood alcohol content reading. Once you get the app, you\u2019ll also be able to call an uber directly through it and avoid having to drive whenever you have some alcohol in your system.\r\n\r\nPerformance\r\nThe Bactrack C6 keychain relies on a BlueFire fuel cell sensor to deliver a really accurate reading of your blood alcohol content level, and on top of that, you also get to know how long it\u2019ll take for your BAC level to get back to zero. Unlike the BACtrack S80 Breathalyzer, you can choose to have these results transmitted to your phone via bluetooth connectivity, but to do this, you\u2019ll need to download the free BACtrack app that\u2019s available on the AppleStore as well as GooglePlay.\r\nDesign\r\nThe biggest win for the Bactrack mobile C6 keychain is definitely its size. It\u2019s a lot smaller than the BACtrack Trace Breathalyzer, since it measures about 2.21 x 0.66 x 1.88 and weighs about 57 grams.It\u2019s operated by one AAA battery, and it\u2019s got a bright, easy-to-read OLED screen on its side, as well as a small washable mouthpiece that you\u2019re meant to blow into. Best practice is to blow into it after around to 20 minutes to get the most accurate results.\r\nValue\r\nWith the fast rising numbers of fatalities recorded in the US as a result of drunk driving, getting yourself a Bactrack C6 or even the BACtrack Mobile Smartphone breathalyzer is one of the things that you can do to know for sure if you\u2019re fit to drive after a night out, or you just need to call an uber. The technology used here is on the same level as the professional grade fuel cell breathalyzers used by law enforcement and hospitals, so you\u2019ll always be assured of a super accurate reading whenever you blow into it. As an added benefit, the C6 keychain also comes with a 1 year warranty, where if the device stops functioning because of a defect, owners will have it repaired for free, or get a replacement.\r\nBACtrack Breathalyzer Professional Grade Smartphone Connectivity Wrap Up\r\nHeadquartered in the United States, BacTrack is a 20 year old company that has been manufacturing police grade breath alcohol testers for general public use. You can buy it off of Amazon, but before you do, be sure to read the customer reviews that have been left by any other previous users.