Proprietary Sensor Technology. Unparalleled Precision.
Every BACtrack breathalyzer is engineered around the two factors that most influence accuracy: sensor type and optimal breath capture.
BACtrack Keychain
Black
$42.99
Sale price
$42.99
Regular price
Skip to product information
BACtrack Keychain
Personal Breathalyzer
$42.99
Sale price
$42.99
Regular price
🚚 Order within the next 2 hours, 15 minutes for delivery by 18 Jun, 2026.
Quickly and easily estimate your BAC with the small and affordable BACtrack Keychain Breathalyzer. Powered by BACtrack's proprietary Advanced Microcheck Sensor technology, the BACtrack Keychain provides reliable and accurate BAC results you can trust. It's ultra-compact, portable keychain design makes it perfect for personal BAC testing on the go - simply blow into the fold-out mouthpiece and results are returned in seconds.
Core Features
In The Box
Tech Specs
Free Shipping on All US Orders
We aim to process and ship orders within one business day of receiving them. Orders being shipped within the continental U.S. should arrive 3-7 business days after it has been shipped.
1 Year Warranty
If during the first year of operation any BACtrack unit ceases to function properly, we will repair or replace the defective product at no charge. To obtain warranty service, please contact customer support at 877-334-6876 or support@bactrack.com.
30-Day Money Back Guarantee
If you are not 100% satisfied with your BACtrack, we'll gladly exchange it or give you a refund for the full purchase price paid, whichever you prefer, within 30 days from the original shipping date.
Core Features
- Advanced MicroCheck® Sensor Technology - Proprietary Advanced MicroCheck® Sensor technology delivers reliable, accurate BAC results you can trust.
- Ultra-Compact Design - Fits inside a purse or pocket and can be easily used as a keychain.
- Optimal Breath Capture - The innovative fold-out mouthpiece ensures only your breath goes into the breathalyzer, while ambient air, fumes, and other airborne gases are kept out.
- One Touch Operation - Simply power on your BACtrack Keychain and begin testing in seconds.
- LED Screen - BAC results are displayed on a bright blue, easy-to-read LCD display.
- Extra Mouthpiece Covers - Includes three additional mouthpiece covers, making it easy and sanitary to test your friends and family.
- Wireless NFC Enabled - Connects to your smartphone via NFC to help you learn about your BAC result, how to correctly use your BACtrack and much more!
- Warranty - All BACtrack breathalyzers are backed by a full one-year warranty, when purchased from an authorized retailer.
Ultra-Portable Keychain Design
The tiny BACtrack Keychain is perfect for BAC testing on the go, easily attaching to your keychain or fitting in a pocket or purse.
MicroCheck® Sensor Technology
Our consumer breathalyzers employ Advanced MicroCheck® Sensor Technology. Using a semiconductor sensor as a base, 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
Breathalyzer accuracy begins with an effective breath capture mechanism. BACtrack breathalyzers are carefully designed to exclude ambient air, fumes, and other airborne gases that could contaminate results.
Precision Hardware
Thoughtful design, unrivaled accuracy.
Proprietary Sensors
Our Advanced MicroCheck® alcohol sensor delivers reliable and accurate BAC results, every time you test.
Mouthpieces
Includes washable, disposable mouthpieces to improve accuracy by collecting the highest quality sample, and to allow you to test others safely.
BACtrack Keychain Breathalyzer
Quickly and easily estimate your blood alcohol content with the small and affordable BACtrack Keychain Breathalyzer. The folding mouthpiece pulls out during testing and slides back down during storage -- blow for accurate BAC results in just 5-seconds. Best of all, you can't forget your Keychain Breathalyzer as it travels with you wherever you carry your keys.
