BACtrack Keychain Alcohol Detector
Shipping Options:: $5 Standard OR $10 Two-Day OR $20 One-Day
Shipping Estimates: Ships in 1-2 business days (Tuesday, Nov 24 to Wednesday, Nov 25) + transit
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Hilarious! Even more hilarious that it has only sold in Wisconsin and Alabama!
For the price I would treat this more like a novelty then an accurate breathalyzer.
I purchased one of these from Costco at the beginning of the year. I never verified how accurate it was from the start, but from my experience after half a year you might as well throw it out. By that time the thing consistently registers a zero.