Safety InformationAlways designate a driver when alcohol is being consumed. DO NOT DRINK AND DRIVE.
DirectionsPress firmly on both plastic caps located at each end of the tube to pierce the aluminum. Blow on the end, oppsite the crystals, and exhale slowly and continuously for 12 seconds. Stop blowing when the red dot becomes white. Wait until the white dot turns back to red and then read the results. For additional user information please refer to the owner's guide.
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