Feature:1. High Accuracy: This breath alcohol tester is used to measure the alcohol concentration in human body with high accuracy, the test range is 0.00%-0.19% BAC (0.0-1.9g/L).2. High Sensitivity: The breath alcohol tester uses a sensitive semiconductor sensor with high sensitivity to give quick results to determine whether you can drive or not.3. Auto Power Off Function: The alcohol tester is powered by 2 AAA batteries (not included) and will automatically shut off after approximately 1 minute of testing to save power. Each battery installation allows for over 200 tests.4. Stylish Design: This alcohol meter is space saving and lightweight. Easy to hold and carry. The pocket stylish size allows you to take it with you wherever you go to ensure safe driving after drinking.5. Digital LCD Display: This alcohol breath tester meter has a large digital LCD screen with an orange backlight. It is easy to use this alcohol breath at night.Specification:Item Type: Alcohol TesterMaterial: ABSTest Range: 0.00%-0.19% BAC (0.0-1.9g/L)Accuracy: 0.01% BAC (0.1g/L)Battery: 2 x 1.5V AAA batteries (shipped without batteries)Preheat: 10sResponse: Less than 5sAuto Power Off: About 1 min.Package List:1 x Tester1 x Lanyard1 x Instruction Manual