describe: Digital LCD Display: This alcohol breath tester has a large digital LCD display with orange backlight. It is very convenient to breathe with this alcohol at night. Stylish Design: This alcohol meter is space-saving and lightweight. Easy to hold and carry. The pocket-friendly and stylish size allows you to take it with you wherever you go to ensure safe driving while intoxicated. High precision: This breath alcohol tester is used to measure the alcohol concentration in the human body with high precision, and the test range is 0.00%-0.19% BAC (0.0-1.9g/L). Automatic shutdown function: The alcohol tester is powered by 2 AAA batteries (not included) and will automatically shut down after about 1 minute of testing to save power. More than 200 tests are allowed per battery installation. High Sensitivity: The breath alcohol tester uses a highly sensitive sensitive semiconductor sensor that can quickly give results to determine whether you can drive. Package contents: 1 piece detector