Application The advanced semiconductor oxide alcohol sensor is a simple method to test blood alcohol concentration anytime and anywhere. for alcohol control Screen display of the portable digital breath alcohol tester gives you a clearer view and the digital alcohol automatically gives you an audible alert. Automatic shutdown, quick response and recovery. Environmental and healthy Display Lie Detector Breath Tester blowing design with five mouthpieces for multiple users, which ensure the use of health and safety. Easy to carry The display alcohol analyzer comes with a keychain design, small volume and easy to carry. The digital breath alcohol analyzer is highly sensitive. Precision: 0.01% BAC (0.1g/L) for your convenience.