“I enthusiastically support BACtrack breathalysers”
– Dr Phil, The Dr Phil Show

BACtrack C6 Keychain

C Series are the Latest 2021 BACtrack Models

The World Leaders in Breathalysers

Powered by BACtrack’s proprietary BluFire® fuel cell sensor technology, the all-new for 2021 BACtrack C6 Keychain breath tester is the smallest fuel cell sensor alcohol tester ever created! Roughly the size of a 9V battery and weighing only 56 grams, the C6 delivers reliable and accurate BAC results from a tiny, yet powerful package.

The C6 is the first BACtrack to offer the new “Dual-Mode” operation. Choose “Standalone Mode” and your BAC results are delivered directly to a bright, easy-to-read OLED screen. Alternatively, choose “App Mode” and the BACtrack C6 seamlessly pairs with your smartphone via Bluetooth. Using the free BACtrack App, you can quickly and easily estimate your BAC, track your results over time, and with ZeroLine®, estimate when your BAC will return to 0.00%.



No Additional Mouthpieces
No Additional Mouthpieces No Additional Mouthpieces
10 Additional Mouthpieces 10 Additional Mouthpieces
20 Additional Mouthpieces 20 Additional Mouthpieces
Same Day Dispatch
12 Month Warranty on all Products
Australian Customer Services

What our customers are saying

We like to enjoy a couple of drinks when we go out for dinner. Now we can without the worry of DUI.

Super fast shipping. Received within 24 hours. What a great quality product!

Our ED relies on accurate patient diagnosis to make critical decisions. We choose BACtrack.

Peace of mind for both us and our kids. The app allows us to check that they are safe. Thank you.

Love the accuracy. Exact same as the roadside test when we were pulled over. It’s so reliable.

We have zero alcohol tolerance. We partner with BACtrack and are committed to a safe workplace.

Who knew we would finally grow up and become sensible? Eliminating risk is a no brainer.

Everyone should have a breathalyser who consumes alcohol, it is not a luxury item, it’s a necessity

I have an interlock and I don’t want to make the same mistake again. Now I have certainty.

Our company specialises in the operation of heavy machinery. We have entrusted BACtrack for years.

Proprietary Sensor Technology.
Unparalleled Precision.

Every BACtrack breathalyser is engineered around the two factors
that most influence accuracy: sensor type and breath capture.


Blufire® Fuel Cell Sensor Technology

Engineered by BACtrack from technology used in experimental vehicle fuel mixing, our proprietary Blufire® Fuel Cell Sensors deliver the most accurate, consistent BAC results.


Effective Breath Capture

Breathalyser test accuracy begins with an effective breath capture mechanism. BACtrack alcohol breathalysers are carefully designed to exclude ambient air, fumes, and other airborne gases that can contaminate results.

Product Information

  • Advanced BluFire® Fuel Cell Sensor: The same technology trusted by hospitals and clinics and offers the highest level of accuracy and consistency.
  • Effective Breath Capture: Locks out ambient air, fumes, and other airborne gases from the breath test sample.
  • Ultra-Portable Size: The smallest fuel cell breath tester ever created! The C6 is a keychain portable breathalyser.
  • Optional Bluetooth Connectivity: Choose to wirelessly connect to your smartphone via Bluetooth. Compatible with the majority of Apple, Samsung, and Google devices. See full list below.
  • ZeroLine® Technology: Estimates when your BAC will return to 0.00%, empowering you to make smarter decisions while drinking.
  • BACtrack Companion App: The free BACtrack app saves and tracks BAC results over time and can even help you call an Uber™ if you’ve had too much.
  • One Button Operation: Press power and begin your alcohol test in seconds
  • Warranty: Full 1 year warranty (upheld in Australia not the US)
  • 1 x BACtrack C6 Breathalyser
  • 1 x BACtrack C6 user manual
  • 3 x Mouthpieces
  • 1 x Duracell AAA alkaline battery
  • Mouthpieces: 3 x Hygienic mouthpieces (included)
  • Flow Error Indicator: Alerts if the blow is not consistent enough to take an accurate reading
  • Adjustable Blow Time Setting: Longer blow times give an increased accuracy result
  • Previous Test Counter: Recalls previous tests
  • Battery Level Indicator: Don’t get left short of power when you need it most
  • Auto Power Off: The unit will automatically power down after 10 seconds to save battery
  • Tracks and Graphs: All previous test results and times are recorded through the app
  • Apple Health Kit: Integration
  • Warranty: Full 1 year manufacturers warranty (upheld in Australia not the US)
    • Sensor Technology: Blufire® Electrochemical Fuel Cell Sensor Technology
    • Sensor Accuracy: +/- 0.006 at 0.050 % BAC
    • Detection Range: 0.000 – 0.400 %B.A.C
    • Dimensions: 5.6 x 4.7 x 1.7 cm
    • Weight:  56 grams (with mouthpiece and battery included)
    • Power Supply: 1 x AAA alkaline battery (included)
    • Battery Life: Approximately 300 tests
    • Warm up Time: Approximately 10 seconds (depending on last use)
    • Response Time: 10 seconds
    • Blowing Time: 5 seconds
    • Operating Temperature: 0-40 °C


    • iOS: iPhone 4S / 5C / 5S / 6 / 6+ / 6S / 6S+ / SE / 7 / 7+ / 8 / 8+ / X(10) / XR / XS / XS Max / 11 / 11 Pro / 11 Pro Max / 12 / 12 mini / 12 Pro / 12 Pro Max
    • iPad: 3 / 4 / Air 1 & 2 / iPad Pro & Mini 1 / 2 / 3 / 4 / iPod 5th Generation & higher
    • Android: Samsung Galaxy S3 / S4 / S5 / S6 / S7 / S7 Edge / S8 & S8+ / S9 / S9+ / S10 / S10+ / S20 / S20+ / S21 / S21+
    • Google: Nexus 5 / 6 / 6P / Pixel / Pixel XL / Pixel 2 / Pixel 2 XL / Pixel 3 / Pixel 3 XL / Pixel 4 / Pixel 4 XL / 5
    • Most other smart devices running Android 4.3+ and equipped with Bluetooth Smart

Accuracy Focused Engineering

We focus on our technology, so BACtrack’s Pro-grade series consistently outperforms.

Precise Results

The Blufire® Fuel Cell Sensor Technology’s linear response provides precise results over the complete range of alcohol concentrations expected in the breath, from 0.000 to 0.400 % BAC. BACtrack Blufire® portable breathalyzers can accurately detect trace levels of alcohol & reliably handle very high BACs.


Blufire® models produce the most consistent and reliable results. For example, they are more likely to show the same test result when someone is tested repeatedly in a very short period of time. This means Blufire® BACtracks easily handle multiple high-frequency breath tests.

High BAC Testing

Blufire® models are consistently accurate at higher BAC concentrations. If someone is very intoxicated, for example, at 0.22% BAC, these models are more likely to provide an accurate test result as compared to semiconductor models, which are less accurate at higher BAC values.

No False Positives

Blufire® models will not show a false positive due to the presence of acetone, which some semiconductor models misread for someone who has diabetes or on a low-calorie diet.

Long-Term Reliability

Extended sensor life helps Blufire® models maintain accuracy for up to thousands of tests, delivering long-term reliability.

Faster Warm-Up Time

Blufire® BACtrack models offer a faster warm-up time, a benefit when conducting high volume and back-to-back tests.

Longer Battery Life

Low power requirements help keep your breathalyser running for longer.