High-precision digital breathalyzer: This breathalyzer has a high-precision semiconductor alcohol sensor. It can quickly provide a result to assess whether you can drive or not. Test winner with 99.1%, range of 0.00% ~ 1.9% BAC / 0.0 ~ 1.9 g/l. Perfect for drivers.

Easy to use: just insert 2 AAA batteries (batteries not included), turn on your breathalyzer. Wait 10 seconds to warm it up, then blow for 3-6 seconds. The result will then be displayed on the LCD screen. The results are displayed for 10 seconds and then automatically turn off.

Automatic alarm function: If the test result is above 0.05% BAC or 0.50 BAC or 0.25 mg/l or 50 mg/100 ml, the breathalyzer will give a continuous signal and remind drivers not to drive. (Wait 20 minutes after drinking to perform the test, the result will be more accurate)

Lightweight and portable: the breathalyzer can be carried anytime, anywhere in your pocket or handbag. It is very suitable for weddings, parties, celebrations and other social events to help you assess whether it is appropriate to drive.