YOMA Breathalyzer AT188

EASY TO USE - The breathalyzer is one-button operation and you can use it without re-calibration. Simply insert the two AA batteries, power on your machine, and begin testing. You will get the test results on the LCD screen immediately. PROFESSIONAL-GRADE ACCURACY - Built with high accuracy latest semiconductor sensor, it can deliver highly precise BAC reading. It has 4 common-used units (%BAC, ‰BAC, g/l, and mg/l) in the same pro-grade technology trusted by hospitals, clinics, and even law enforcement and it can be widely used to test friends at bars, families at household parties. SMALL & PORTABLE SIZE - The portable alcohol tester is Space-saving, lightweight, and smaller than a smartphone, so you can take it in your pocket or purse anywhere at any time. Great for ensuring your safe driving. It also can help you judge whether to drive or not after drinking. SMART ALARM FUNCTION & ENERGY-SAVED DESIGN - Press the power button, the 20S counting down, and wait for the “bi” soun