SIMPLE OPERATIONThis breathalyzer to test alcohol utilizes advanced sensors to provide precise measurements of your alcohol content. To use, simply blow into the device for 4-5 seconds and your BAC results will be displayed on a bright, easy-to-read LCD screen just 3 seconds later. QUICKLY & ACCURATELYThe alcohol breathalyzer tester uses a sensitive semiconductor sensor, which can accurately display the alcohol content in your body. Use this breathalyzer to quickly measure your alcohol level after drinking. MEASUREMENT RANGEThis alcohol breathalyzer can measure BAC levels from 0.00% to 0.20%. When the alcohol test result reaches the maximum value of 0.20% BAC, the value will not increase. Even if the amount of alcohol consumption increases, the test result will still show 0.20% BAC. Note: for more accurate results, take the average value after 3 consecutive tests. PORTABLE & ENERGY-SAVINGThis personal breathalyzer is small and portable, and can easily fit in your wallet or pocket along with alcohol prep pads, breast milk alcohol test strips, alcohol swabs, etc. The alcohol tester breathalyzer is automatically switched off 10 seconds after the completion of the test to save power. Additionally, the portable breathalyzer alcohol tester has a battery level indicator. WIDELY AVAILABLEThe breathalyzer machine comes with 10 replaceable mouthpieces that are washable and reusable. Any questions about the home breathalyzer for alcohol