- Convenient use: This professional LED display alcohol tester is equipped with a high-sensitivity semiconductor sensor, allowing you to measure your blood alcohol concentration anytime and anywhere. It features a fast response time and an automatic shut-off function for efficiency. - Product specifications: The digital breath alcohol tester measures 112 x 68 x 22 mm (4.4 x 2.6 x 0.8 inches). Its portable design makes it easy to hold and transport in your pocket, car, or handbag. - Quality construction: Made from high-quality materials, this alcohol tester comes with 5 replaceable inhaler sleeves. Regularly changing the nozzle enhances safety and hygiene. - Reliable performance: The LCD display breathalyzer improves detection efficiency and features an LED backlight, making it usable in dark environments. It has a detection range of 0.00-0.19% BAC and 0.0-1.9g. - Practical applications: Ideal for personal use before driving, ensuring you stay within safe limits. Perfect for social gatherings where you want to monitor alcohol consumption. Also beneficial for designated drivers checking their sobriety before getting behind the wheel.