Built in alarm alerts when alcohols concentration exceeds safe limits, effectively helping drunk driving risks with sound and visual warnings Clear 1.2Inch color screen displays easy to read measurements even in bright sunlight, offering visible blood alcohols content data at a glance Professional alcohols tester with electrochemical sensors delivers precisely and stable readings, ensures inaccurate breathalyzers results for personals use or workplace checks Instantly warming up allows immediate testing upon power on, providing quick and efficient alcohols detect without waiting time for portable breathalyzers convenience Compact design at just 29g weight fits comfortably in pockets or bags, ideal for personals alcohols testing during travel, social event, or daily precautions, Manufacturer: RGYBAO