Equipped with 12 suction nozzles, the nozzles can be cleaned and recycled.The ultra compact design allows the alcohol tester to be placed in a pocket, making it easy to hold and carry wherever you go. Very suitable for drivers.The police precise breath analyzer adopts a professional airway design and high-precision semiconductor sensor breath analyzer, which can detect blood alcohol concentration (BAC) more accurately and faster. Test winner, 99.1%, with a range of 0.00%~1.9% BAC/0.0~1.9g/L.If the alarm function test result is higher than 0.05% BAC or 0.50 BAC or 0.25mg/L or 50mg/100ml, the breath analyzer will emit a continuous beep and remind the driver not to drive.With backlight, easy to read.Easy to use, just insert 2 AAA batteries and turn on the alcohol tester (not included). Wait for 20 seconds for preheating, and then you can start testing.The exhalation tester will automatically shut down when it is not working to save electricity.Packaging content: 1 * breath analyzer, 12 * ports, user manual."