YRHWS Breathalyzer Alcohol Tester with USB Rechargeable and 20 Mouthpieces, Professional Breathalysers Portable Breath Digital LCD Display for Personal & Car Use

【Fast and high-precision sensor】Breathalyzer Features both air‑pressure and semiconductor sensors for highly accurate BAC readings, delivering faster response and higher precision than single-sensor breath testers. There is 3 unit measurement to choose - %BAC, ‰BAC, mg /l. 【Easy to use】Alcohol Tester Just insert the 3* AAA batteries, wait ~10 seconds warm-up, then blow steadily into the mouthpiece for 3–5 seconds. The LCD screen displays results instantly with colour-coded alert (green/yellow/red) for intuitive reading. Ideal for pre-driving checks or personal safety monitoring. 【USB Charging】Can be charged with a USB charger, without having to replace the battery. Tip: The alcohol detector has been tested many times during production, and the test records are kept in the product, and the test accuracy is calibrated.so you can use it with confidence. 【Auto-Alarm Function】When the test result is greater than 0.3 g / L, 0.03 % BAC, or 0.15mg / L, the indicator light of the alcohol detector will change to inform you so that you can make a better judgment. Tip: Wait at least 20 minutes after drinking before using for optimal accuracy. 【Excellent gift】Alcohol tester brethalizers come with 20 interchangeable mouthpieces that can be cleaned and reused. Suitable for personal use, home, social events, and certain industries that require alcohol testing, such as operating heavy machinery or driving. It is the perfect gift for your boyfriend, father, husband, grandfather, son, and boss.