Feature: 1. HIGH PRECISION DETECTION: This mini alcohol tester gives you accurate readings every time. Its high precise processing means you can trust the results, ensuring you are always aware of your alcohol levels, promoting safer habits after the consumption of alcohol. 2. INTELLIGENT DESIGN: The tester comes with an intelligent AI chip that prevents false readings, ensuring you won't get an empty measure even without a blowing airflow. Plus, the intelligent voice function gives clear instructions, making the device easy to use by everyone. 3. PORTABLE AND CONVENIENT: This compact alcohol tester device is designed to fit into your wallet or pocket with ease. Perfect for weddings, parties, banquets or other social activities where alcohol is involved, it allows you to ensure safe driving post consuming alcohol. 4. WIDE APPLICATION FAST RESULTS: Portable alcohol testing tool is equipped with a sensitive semiconductor sensor that accurately indicates the alcohol content in your body. An operation is simple, blow into the device for 10 seconds and receive your results on a bright, easy to read screen. 5. BUILT IN LITHIUM BATTERY: Alcohol detector is equipped with a built in large capacity lithium battery and a Type C interface, ensuring you can recharge it quickly and conveniently, allowing you to always have access to your alcohol monitor even during longer occasions. Specification: Item Type: Alcohol Tester Material: ABS+Electronic Components Battery Type: Lithium Battery (Shipped with Built in Battery) Battery Capacity: 500mAh Measurement Range: 0-0.20% BAC Operating Temperature Range: -5°C to 45°C Storage Temperature Range: -20°C to 50°C Model: MR701. Package List: 1 x Alcohol Tester 1 x Data Cable 1 x User Manual