【High Accuracy Sensor】You can get the accurate blood alcohol concentration with the upgraded high-sensitivity semiconductor sensor in seconds. Approved digital breathalyzer recognized by all kinds of professionals. The instructions are in English. If you need a French manual, please contact us.【USB Rechargeable and Long Lasting】Come with a USB data cable, the breathalyzer is rechargeable. It is very convenient for you to charge it by USB on your car, computer, socket or power bank. Alcohol test can last 300 times after a full charge.【Dustproof Design Alcohol Test】Slide the button down to turn it on, blow directly into the device without contact to avoid contamination, the test is safer. And we put everything in a gift box, especially we prepared a velvet bag that is portable in your car and a perfect gift for your friends.【2 MEASUREMENT UNIT】There are 2 measurement units to choose from,% BAC, g/l. After 3 minutes of testing without command, it is automatically deactivated. Do not use the breath analyzer until 20 minutes have passed since the last drink consumed. Wait at least 3 minutes to start the next test after the last test.【LCD Display Warning】With LCD display to clearly see the result and with 3 colors to remind you whether the alcohol test result is safe or not. They are separately green, yellow and red, green means safe, yellow is a warning and red is danger. For measurements equal to or above the alarm concentration level, the analyzer beeps simultaneously.Number of pieces delivered: 1Welcome to meet