Mini Auto Alcohol Tester Alcoholism Test Tools Meter Analyzer Portable Key Chain Digital Alcohols Breath Breathalyzer Vehicle Driving Testing Tool

Portable Keychain LED Alcohol Breath Tester Breathalyzer Easy to use,quick response and resume in seconds. First press and hold the power button to warm-up, when warm-up is succeed, just simple blow into the breath inhaler for 3-5 seconds Lastly, read the test result. Only Green LED light on.syi