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New Zealand owned

1-3 year warranty

NZ's breathalyser specialist

BACtrack Go Keychain


539 Reviews

Ideal Application: Economical & compact

BACtrack Go Keychain is one of the smallest and sleekest breathalyzers on the market. The Advanced MicroCheck® sensor determines BAC quickly and accurately while the mouthpiece folds away to protect it while not in use. Proprietary sensing technology and a specially tuned algorithm, deliver accurate results unparalleled at this price point.

BACtrack Go Keychain Breathalyser

BACtrack Go Keychain


539 Reviews

Core Features

Advanced MicroCheck® Sensor Technology:

Proprietary Advanced MicroCheck® Sensor technology delivers reliable, accurate BAC results you can trust.

Effective Breath Capture:

The innovative fold-out mouthpiece ensures only your breath goes into the breathalyser test while ambient air, fumes, and other airborne gases are kept out.

Ultra-Compact Design:

Fits inside a purse or pocket and can be easily used as a keychain portable breathalyser.

One Button Operation:

Press power and begin your alcohol test in seconds.

LCD Screen:

BAC results are displayed on a bright blue, easy-to-read LCD display.

Flow Error Indicator:

Alerts if the blow is not consistent enough for the breath test sample to be taken.


Full 1-year manufacturers warranty (upheld in New Zealand, not the US)

Product Specs


3 x hygienic mouthpieces (included)

Auto Power Off:

The personal breathalyser will automatically power down after 10 seconds to save battery

Power Supply:

1 x AAA Duracell alkaline battery (included)

Battery Life:

75 tests


  • Sensor Technology: Advanced MicroCheck® Sensor Technology
  • Sensor Accuracy: +/- 0.01 at 0.05 % BAC
  • Detection Range: 0.00 – 0.40 %B.A.C
  • Dimensions: 6.2 x 3.7 x 1.4 cm
  • Weight: 56 grams (with mouthpiece and battery included)
  • Warm up Time: 11 – 12 seconds (depending on last use)
  • Response Time: 5 seconds
  • Blowing Time: 5 seconds
  • Operating Temperature: 0-40 °C


  • 1 x BACtrack Go Keychain Breathalyser
  • 1 x BACtrack Go Keychain user manual
  • 1 x Duracell AAA alkaline battery
  • 3 x Mouthpieces


539 Reviews


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Proprietary Sensor Technology.
Unparalleled Precision.

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

Advanced MicroCheck® Sensor Technology

Our personal breathalysers employ Advanced MicroCheck® Sensor Technology. These sensors go through a patented burn-in process, which delivers more accurate and reliable results when compared to standard semiconductor sensors.

Optimal Breath Capture

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 contaminate results.

Accuracy Focused Engineering

We focus our technology, so BACtracks’s Pro-grade series consistenly outperforms.

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      BACtrack Go Keychain Breathalyser

      BACtrack Go Keychain


      539 Reviews

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