Certified portable, rechargeable alcohol tester with screen, 5 mouthpieces, high-precision measurement for personal home testing (black)

Fast response and ultra-precise accuracy: This professional breathalyzer uses a high-precision semiconductor sensor to accurately and quickly measure the alcohol concentration in your breath, displaying results on the screen with one-decimal-point accuracy. (In environments with very high alcohol content, the Alcotest may need to be warmed up several times for calibration - this is normal.)

6 units of measurement: Six measurement standards are available: mg/100 ml, %bac, mg/l Brac, %bac, g/L, and ‰ PROM. The unit conversion chart is printed on the back of the device. To replace the device, press and hold the "Start" button. (Note: For optimal accuracy, the average of three consecutive measurements is calculated.)

Historical data recording: The NF-certified electronic breathalyzer can store up to 9 sets of data, so you can view or delete previous readings with a single click. Track your alcohol consumption at any time. 5 high-quality masks: Comes with 5 individually wrapped, food-grade masks. Washable and reusable after use, ideal for family or friends. Color LCD screen: The approved electronic alcohol tester features a smart detection function that displays different colors and emits an audible alarm on the screen depending on the blood alcohol level for visual data observation. USB charging: Built-in 320mAh high-capacity lithium battery and Type-C charging port (Type-C charging cable included). Convenient and fast charging provides up to one month of battery life when fully charged, eliminating the hassle of battery replacement. User-friendly: This portable electronic device is easy to use. After an 11-second warm-up, inhale deeply and exhale vigorously for more than 3 seconds. Wait 3 seconds, and the test result will appear on the color LCD screen. (If the breath sample is insufficient or missing, the screen will display an error. Simply press the start button again to warm up the device.)