This alcohol tester is designed for accurately measuring the body alcohol content. It is easy to use， it measures the alcohol content just by blowing to the instrument. Compact design and portable size， convenient to carry.Features:Useful breathalyzer to accurately the body alcohol content(BAC) just by blowing to the instrument.Advanced alcohol sensor with high sensitivity and quick response.It can give a warning when alcohol content is over 0.05BAC.To ensure the accuracy of the measurement， it is recommended to measure 2-3 times and time interval is over 3min.LCD screen with backlight， convenient for night use.Compact design and portable size， convenient to carry.Auto power off， energy saving.Specifications:Color: BlackMeasuring Range: 0.000-0.190%BACAccuracy: 0.001Warm Up: 120sBAC Alarm: 0.05%BAC，0.5g/LPower Supply: 4 * 1.5V AAA Batteries(not included)Item Size: 10.5 * 5.5 * 2.5cm / 4.1 * 2.2 * 1inItem Weight: 67g / 2.4ozPackage Size: 19 * 11 * 4.5cm / 7.5 * 4.3 * 1.8inPackage Weight: 149g / 5.3ozPackage List:1 * Alcohol Detector10 * Mouthpieces