This professional alcoholic tester features an advanced electrochemical sensors with high detecting accuracy and strong anti interferences capability, providing fast blood alcoholic content measurements for results. Ready to use immediately without preheating, this portable breathalyzers delivers testing results in just 3 seconds with color LED indicators (green/yellow/red) to clearly distinguish safe, drinking, and drunk states at a glance. This handheld alcoholic detector easily fits in pockets or car compartments, making it a practical tool for testing before driving. Equipped with a Type C charging port and built in 250mAh battery, this alcoholic meter stores up to 200 testing records for easy tracking and review of your alcoholic consumption history. Supporting multiple unit conversions, this versatile breathalyzers covers various measurement ranges for daily testing needs in different scenarios.