Thank you for purchasing your BACtrack Keychain Alcohol Detector from Costco!


Quickly estimate your blood alcohol content with the small and affordable BACtrack Keychain Alcohol Detector. The folding mouthpiece pulls out during testing and slides back down during storage – blow for results in just 5 seconds! The BACtrack Costco Keychain is good for up to 150 tests. And best of all, you can’t forget your Keychain as it travels with you wherever you carry your keys. 

Some quick links for reference:
BACtrack Help Section
Contact BACtrack Customer Support
Download Product Manual


Key Features

  • BACtrack’s smallest alcohol detector – fits inside a purse or pocket and can be used as a keychain.
  • Displays BAC results in easy-to-read two-digit LED display (0.02, 0.13, etc.).
  • Innovative folding mouthpiece maximizes portability and ease of use.
  • Three optional mouthpieces also included for multiple users.
  • Wide test range – results displayed from 0.00-0.40 %BAC.
  • Operates with one AAA battery, included.
  • Full one-year warranty.
  • Good for up to 150 tests
  • FDA 510(k) cleared for personal use. 


See the BACtrack Keychain Alcohol Detector in Action

See the demo video for the BACtrack Keychain Alcohol Detector


BACtrack Keychain Features

    1. Wide test range – results displayed from 0.00-0.40 %BAC.
    2. Easy-to-read two-digit LED display. Test results are displayed in an easily recognized format.
    3. Ultra-compact design makes the Keychain small enough to fit inside a purse or pocket and can be used as a keychain.
    4. Innovative folding mouthpiece maximizes portability and ease of use. Three optional mouthpieces also included for multiple users.

    BACtrack Keychain Kit Contents

    The Costco BACtrack Keychain kit includes the items listed below:

    • BACtrack Keychain Alcohol Detector
    • Three replaceable mouthpieces (optional for use) 
    • One AAA battery
    • Owner's Manual
    • One-year warranty

    BACtrack Costco Keychain Breathalyzer Specifications

    Dimensions 1.45 x 0.55 x 2.44 inches (3.7 x 1.4 x 6.2 cm)
    Weight 2 oz. (56 grams) with batteries
    Mouthpieces Fold-out; 3 included
    Battery 1 AAA battery, included
    Sensor Technology Advanced MicroCheck®
    Sensor Life 150 tests
    Sensor Accuracy +/- 0.01 at 0.02% BAC (blood alcohol content)
    Warm-up Time 11-13 seconds
    Blowing Time 5 Seconds
    Response Time 5 Seconds
    BAC Range 0.00 - 0.40% BAC (Blood Alcohol Content)
    Warranty 1 Year