BACtrack C6 Keychain Breathalyzer Review

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Updated June 27, 2022
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95 Expert Rating

If you’re having a night out and enjoying a few drinks, it makes sense to get accurate BAC results before you leave. The BACtrack Keychain is one of our best car accessories, it comes equipped with a professional-grade alcohol sensor with Microcheck sensor technology. It’s compact enough to fit in your pocket or on your keys and only uses a single AAA battery. This keychain breathalyzer is one of the best products in the United States and made our best breathalyzer list. Keep the screen on your breathalizer clean with our Toddy Gear smart cloth review.

Why We Like It – BACtrack C6 Keychain Breathalyzer

The BACtrack Keychain Breathalyzer is one of the easiest ways to check your blood alcohol content while you’re out and about. Its compact size means it can fit into your pocket, and it can be used with or without the smartphone app. Simply power it on, breath alcohol into the fold-out mouthpiece, and the advanced Microcheck Sensor Technology will deliver accurate BAC results. You might want to keep this in your QMC Jeep JK six pak concept if you’re going out for a night of drinking.

  • Compact Size
  • Instant Readings
  • Easy to use
  • Pricey
  • Suspect social sharing features
  • Inconsistent readings at lower levels

Related: Consider the BACtrack Mobile Smartphone Breathalyzer trusted by US law enforcement and healthcare professionals countrywide.


For such a small breathalyzer Bactrack’s keychain offers great performance that’s confirmed by many buyer verified reviews. Thanks to its advanced Microcheck sensor, it can deliver almost instant BAC results. This great product can be used together with the smartphone app, or on its own. One of the useful features of the app is that it can call Uber directly. It can also store your results from months ago. The C6 can even tell you when your blood alcohol level will get back to 0.00%. For an FDA-approved breathalyzer, check out the BACtrack S80 Breathalyzer.


The BACtrack C6 boasts a compact and innovative design. The white color looks smart and it doesn’t come in the color black. The Microcheck sensor together with the fuel cell sensor allows accurate results that are just not possible with the old semiconductor sensors. Years ago additional size and weight would be required to make a device like this. Many verified buyer reviews also praised the fact that the built-in, easy to read display doesn’t need the app to work. We would recommend the BACtrack Trace as a viable alternative.

Related: Get yourself the Bactrack Breathalyzer Professional Grade Smartphone Connectivity for police grade accuracy whenever you’re looking to find out your blood alcohol content reading.


The Backtrack C6 offers a compact and efficient way of measuring your BAC thanks to its sensor technology. The design is solid and comes with a one-year warranty. It’s also a very popular product and with a big question and answer community to reply to support-based questions. You can’t put a price on people’s lives and their safety. The C6 comes at a great price and offers incredible value with or without free shipping. The BACtrack Mobile Smartphone breathalyzer is a better bet if you want a unit with a rechargeable battery.

BACtrack C6 Keychain Breathalyzer Wrap Up

The BACtrack C6 Keychain Breathalyzer is an innovative gadget, which simply couldn’t exist a few years ago. You can accurately check your BAC results discreetly and at any time. It may be more expensive than some of its rivals, but you are paying for the convenience of a compact size. This is one device that’s worth having on your night out. We hope you found this review helpful.

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