1. Accurate readings anytime, anywhere: The singlescreen white portable breathalyzer provides precise measurements in the range of 0.00 1.9% BAC and 0.0 1.9g/l, ensuring drivers get reliable results. Its 0.01% BAC (0.1g/l) resolution ensures accuracy in every test, promoting road . 2. Fast and efficient: The breathalyzer has a warmup time of only 10 seconds and a response time of 5 seconds, providing fast results when you need them most. Its fast response makes it ideal for quick testing situations, ensuring minimal waiting time for users. 3. Userfriendly design: The alcohol concentration tester is designed to be easy to use, with a simple singlescreen interface that requires minimal instructions. Powered by 2 AAA batteries with a voltage of 3V, it is easy to operate and maintain and can easily meet user needs. 4. Reliable accuracy: The measurement accuracy is precise and the error is only 0.01% BAC (0.1g/l), you can rest assured. This reliability ensures consistent and reliable readings, increasing confidence in its performance in a variety of environments.