High-precision Digital Breath AnalyzerThis breathalyzer has a high-precision semiconductor breathalyzer. The results are displayed accurately in a short time, and the results obtained can be checked by the authorities competent.Detection Range0.00-0.19% BAC (0.0-1.9g/L), fast detection results, fast recovery. Bringing convenience to everyone's life, increasing the feeling of joy and happiness is our driving force.Easy to UsePress and hold the power button for 2 seconds to start the battery tester. professional breath, wait 15 seconds to warm up, then blow on the tester for 3-5 seconds. The result is ready in 3 seconds and displayed on the LCD screen for 10 seconds.Alarm soundWhen the test result is above 0.05% BAK or 0.5g/L, the analyzer will breath sounds to warn you not to drive. In order to save energy, it will automatically shut down if there is no operation for 10 seconds after testing.Portable DesignThis professional breath tester takes up little space and can be easily carried in your wallet or pocket anywhere. It is very suitable for weddings, parties, celebrations or other social events, ensures driving safety.