Accurate alcohol detection: Built-in high-sensitivity components can remove impurities in the breath, making the alcohol concentration detection in drunk driving more accurate and faster, saving time and effort. LCD display: The handle is equipped with a screen digital display, which is more convenient to read. The machine will automatically shut down after use to save energy. Three-color indicator light: There are green, yellow and red LED indicators, indicating safety, caution and danger, respectively. When alcohol is detected and an alarm sound is heard, the corresponding light will illuminate to remind you of the test result. High Quality: The alcohol tester is made of high quality plastic material, smooth and non-toxic, so it is absolutely safe for people to use. It's also durable and has a long lifespan. Ease of use: The alcohol dispenser is very easy to use. Press and hold the power switch for 2 seconds to turn on, warm up for 10 seconds, then take a deep breath and blow for 10 seconds to get accurate results. 【Product size】83*21*21mm Package includes: 1*Car alcohol detector (without battery) Dimensions may vary slightly due to manual measurements Due to the different display screens, there may be some differences between the color and the real object, thank you