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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 o
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58 ratings
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Confidence and Safety All in One
The BACtrack Keychain is a convenient reminder to make responsible choices. I like its compact design and the extra information it provides, while knowing a reading never guarantees it’s safe to drive. A useful little tool to keep safety top of mind. It also adds a little fun when gathered with friends.
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Brett · October 13, 2026
Handy and Easy to Use
Quick and easy to use. Smallest enough to keep in my pocket.
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Anonymous · March 27, 2026
Breathalyzer
This is so easy to use and everyone at the bar wanted to try it.😁👍🏻 Good thing I got the extra mouth pieces. Got one for my 24 yr old daughter too❤️
