1High Sensitivity: Alcohol tester is a kind of alcohol measuring instrument with high sensitivity and high accuracy. You can test before driving to avoid unnecessary trouble. 2Clean and Sanitary: Accurate alcohol tester does not use traditional suction nozzles, it is clean and hygienic and can be used with confidence. 3With Display Screen: The display screen reads clearly, and you can directly view the test results, which is convenient, fast and practical. 4Small and Portable: The alcohol tester has a built in purification chamber and is small and portable, making it easy to use when going out. 5Stable Performance: Professional manufacturing, craftsmanship and high accuracy help to provide stable performance to meet your various needs.