... Breath Tester For iphone 5 2. Mini size alcohol tester 3. LCD digital display breathalyzer Breath Alcohol Tester For iPhone ... unlock iPhone, then press the switch of the tester for 2-3 seconds, at the same time LCD ... blow to air hole and exhale into sensor for 3 to 5 seconds, after finishing Countdown, ... or 0.5g/l)over & EQUAL 0.08% BAC (or 0.8g/l) Product Photos: Breath Alcohol Tester For iPhone 5