BACtrack Go Keychain Breathalyzer

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BACtrack Go is the smallest, sleekest accurate breathalyzer on the market. Advanced MicroCheck alcohol sensor determines blood alcohol content (BAC) quickly and accurately; mouthpiece folds away to protect it while not in use. Proprietary sensing technology and a specially tuned algorithm, deliver accurate result.

Key Features

  • Proprietary Advanced MicroCheck Sensor technology delivers reliable, accurate BAC results you can trust.
  • Fits inside a purse or pocket and can be easily used as a keychain. The innovative fold-out mouthpiece ensures only your breath goes into the breathalyzer, while ambient air, fumes, and other airborne gases are kept out.
  • BAC results are displayed on a bright blue, easy-to-read LCD display.
  • Includes three additional mouthpiece covers, making it easy and sanitary to test your friends and family.

All Product Details
Brand BACtrack
Product Type Breathalyzers
Battery Type 1x AAA Battery
Product Width 60.8cm
Product Depth 36.2cm
Product Height 14.1cm
Manufacturers 12 Months
BACtrack Go Keychain Breathalyzer is rated 4.1 out of 5 by 591.
Rated 3 out of 5 by from Awesome product, very fragile. Bought mine about a month and a half ago. Got to use it twice. Very easy and quick to use. Thought it would be extremely handy being on my keys. Sadly, I think I handle my keys to roughly. After two days of travel on my key ring, it only gives me an error when attempting to blow air into it. Suggestion, don't keep on your keys. On the two occasions I used it, the results seemed accurate as long as there was ample time between your last sip and when you test as the residual drink will cause a higher reading. Keep this product by your front door or in your glove compartment and I'm sure it will have a long life. I wish I had been able to use it longer.
Date published: 2014-12-21
Rated 5 out of 5 by from I would buy from backtrack again This is a great product. I purchased this after I was pulled over after an evening with my family. I had had a couple of drinks over a 5 hour period of time. A state trooper pulled me over and I was given a sobriety test and a breathalyzer. I passed all of but the way the trooper made me feel and the possibility it could have been in a life changing situation made me order one of these as a reminder for all of my adult children and myself to think twice and this can provide a moment of focused thought to help guide a decision. Way to easy to think a couple drinks are ok, all depends on the time that passes, not so much how you think or feel and the damage will linger forever.
Date published: 2018-03-31
Rated 5 out of 5 by from Family covered My wife bought one for me, and one each for our two adult daughters as Christmas presents. She bought the keychain version after doing her own research. I have used the product over a dozen times at various times at parties and other outings. After the novelty of seeing the numbers and guessing what the BAC would be, the realization of what the number meant started to hit home. I have taken several friends home because of your product. Thank you.
Date published: 2015-02-21
Rated 5 out of 5 by from Compact and seems to work well. Small and compact. Seems to work well, though am concerned over whether or not a unit at this price gives accurate results. Rule of thumb is to add .01 to your result as the unit is rated at an accuracy of +- .01. (So if you blow a 0.05, assume you are actually at 0.06). Another issue to consider is that the instruction manual states that the unit needs to be professionally recalibrated every so often--every 6 months or so---or as often as every 1 to 2 months if you use it everyday! That seems very impractical (and costly??). My advice: Do not use it more than you have to so that you can avoid getting possible bad results and needing calibration.
Date published: 2013-03-13
Rated 5 out of 5 by from I highly recommend this product I gave them as gifts to my daughter, her boyfriend, and a friend. Better safe than sorry. And it's not worth taking a chance to get behind to wheel after drinking. While the keyring units generally read slightly higher than the home unit, it's better to read higher than low in my opinion. I've had my for years now. I don't drink and drive, and this serves as a reminder. Additionally, if you've had a few too many at home at night, you should test in the morning. I've friends get ticketed early in the morning for driving near the limit as enough time had not passed to process the alcohol in their system by 6 AM.
Date published: 2018-02-17
Rated 4 out of 5 by from stable ans useful Use to frequently test a recovering alcoholic so there are no opportunities to lie. Works great for this purpose. Accuracy is pretty good, I've run independant experiments for my own knowledge. Word of caution- if you dont believe the result, try again. It seems like the patient i use it on can alter the results if he's really trying. Don't really know how. But even when its off, its the reading is still positive, so it doesn't really matter for our purposes. It also senses a very recent drink very high, and cough surup, by the way, has alcohol in it. Retest in 5 minutes if you dont believe the result. This device may have helped save my marriage.
Date published: 2014-04-10
Rated 5 out of 5 by from When used correctly! Follow the instructions. Wait 15 mins after drinking, smoking, eating before testing. Test before drinking, after one drink, two drinks, etc. test at end of drinking. Establish a baseline for yourself on how your body processes alcohol. When used correctly, this nifty and cheap device can accurately measure your level of intoxication. I wouldnt trust it to use in a "should I drive?" Scenario, but it helps to recognize how your body reacts to intoxication- ie. how many it takes to put you over the limit. I found that after 2 glasses of red wine i am at 0.07! Ive driven on 2 glasses of wine before, i know better now. Wonderful for education, whenever i test myself, everyone around wants a go! Would buy again.
Date published: 2015-01-04
Rated 1 out of 5 by from Can't get it to work I'm not sure about the readings, it gives me a .02 when measured 15 minutes after a glass of wine, which I am guessing is accurate. Then another 20 minutes later, I am back at 0. Also, there is an app associated with it, I downloaded the app, when I start it, it tells me there is a firmware update, I try to get the update and it says that there is no network, the problem is that the 'no network' message appears too fast, it is not even trying to connect to a network. Finally, when connected to the app, it is stuck in the 'warming up' mode, it never lets me take a reading (while the app mode is enabled).
Date published: 2017-11-27
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What's in the box
  • BACtrack Go Keychain Breathalyzer
  • 3x Mouthpieces
  • 1x AAA Battery
  • Instruction Manual 
  • Warranty Card
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