1、High Accuracy: USB breathalyzer has sensitive induction, stable transmission, strong anti interference line, and can also measure fine alcohol, and the detection is accurate. 2、Rapid Detection: Portable alcohol detector blowing detection, rapid investigation, no blowing pipe, no contact blowing, more hygienic measurement. 3、3 Colors Display: Alcoholic detector uses three color display, according to the different alcohol concentration test results, the screen displays different prompt colors. 4、LCD Display: Breath alcohol tester adopts LCD high definition screen, which clearly displays the value and is easy to observe. 5、Warning Function: Portable breathalyzer has a sound warning, if it exceeds the standard range, a warning will be issued. 1 x USB Breathalyzer1 x User Manual1 x USB Power Cable Item Type: USB BreathalyzerMaterial: ABSSensor Type: Semiconductor Type SensorDisplay: LCD (Black and White)Test Range: 0.00 to 0.199%BAC(0 to 0.999mg/l)Measurement Unit: mg/l（BrAC) mg/ml(BAC)Measurement Mode: Quick Check, Automatic DetectionBattery: Polymer Lithium Battery 140mAh (included)Use Time: 150 Times of Continuous Wine TestingVoltage: 5VWorking Temperature: 0 to 45℃Warm up Time: 10 SecondsBlowing Time: within 10 Seconds, More Than 4 Seconds RequiredResponse Time: Less Than 5 SecondsCurrent: 1AWeight: Approx. 48g / 1.7oz