Size: 118*70*28cm Digital Alcohol Tester 5 Mouthpieces[High Accuracy] With professional airway design and equipped with high-quality fuel cell sensor, the portable breath alcohol tester provides you with accurate results with a detection range of 0.000%-0.19% BAC (0.0-1.9 g / l), the accuracy is +/- -0.01% BAC (0.1 g / l), which helps you make the right decision when drinking. [5 Mouthpieces] The breathalyzer comes with 5 spare mouthpieces and five nozzles, which can be cleaned and recycled. Not sharing the mouthpieces is more hygienic, making the test results more accurate. [Easy One Button Operation] With just one button, you can easily turn on the breathalyzer and do a 10-second warm-up, a 5-second reaction, and a very fast reaction test. The LCD screen directly displays the accurate test results. It is very convenient and quick to use. [Clear LCD Screen] Breathalyzer is designed to bring you professional level accuracy for safe driving. The LCD graphic display shows how drunk you are, whether it's dangerous (above 0.05% BAC), unsafe (about 0.02% BAC) or safe (below 0.02% BAC). Displays "Caution" when the result is between 0.02% and 0.05%, displays "Danger" when the result is equal to or greater than 0.05%. [Portable Size] The breathalyzer is small and light, easy to put in your pocket. So you can easily take it with you anywhere. Notes:1. Due to manual measurement, please allow 1-3 cm error. Make sure you don't mind before you bid.2.Colors may vary due to different monitors, please understand. Thank you for your support :)