Accurate Breathalyzer In your efforts to drive more responsibly you need the most accurate results. While some breath testers give inconsistent readings and leave you wondering what your true BAC reading is, Our breathalyzers will always give you police grade accuracy.Sensitivity & High Precision: With its high-precision semiconductor alcohol sensor, the alcohol tester breathalyzer will give you accurate results and beat alarm when too much alcohol is detected.Package includingThe package includes 1 breathalyzer for alcohol, 1 manual, 12 mouthpieces(Reusable after cleaning).Easy to Use: Just keep pressing the power button for 3 seconds to start the breath alcohol tester. Wait for 10 seconds for preheating and then keep blowing for 3-5 seconds to get the result. The result will be displayed on the LCD screen for 15 seconds. Then the blood alcohol level tester will automatically power off. NOTE: To obtain more accurate result, please use it after stopping drinking alcohol for 20 minutes and test repeately 2 to 5 times.Compact BreathalyzerThe compact breathalyzer easily fits in a pocket making it a great portable breathalyzer for any occasion.