【High Precision Sensor】: The alcohol tester uses a high-precision chip and an updated DFFA dual filter algorithm for more accurate readings. It can quickly and accurately display blood alcohol concentration, with a response time of 【Touchless】: The blow-test alcohol tester does not require an additional mouthpiece. The sensor is equipped with a cleaning chamber that cleans out interfering substances so that only alcohol remains, and can display the alcohol concentration with high precision. (It takes at least 20 minutes for alcohol to pass from the digestive tract into the bloodstream. It is therefore recommended to perform the test 20 minutes after drinking). 【Easy to use】: The high-capacity USB rechargeable lithium battery has a long service life when fully charged. Press the start button to start the initialisation countdown for a 10-second warm-up phase, blow into the breath inhaler for 3-10 seconds, three colour blocks, digital display, intuitive display of the breathalyser results. 【Lightweight and Portable】: This breathalyser weighs only 80 g, size: 14 cm x 2.6 cm x 2.6 cm, portable and easy to store, you can put it in your pocket, car or backpack. Perfect for home use, outdoor camping, carnival and other occasions, just test your breath when necessary. 【Package includes】: 1 x breath tester, 1 x charging cable, 1 x user manual. Our products have undergone strict quality control before leaving the factory, please feel free to purchase. If you have any questions or suggestions about our products, please do not hesitate to contact us, we will help you solve it. High precision: The breathalyser provides fast and accurate results with an accuracy of ±0.005% BAC and a response time of less than 5 seconds. Touchless: No mouthpiece required! The tester measures alcohol content accurately by detecting only the alcohol in your breath – ideal for hygienic applications. Easy to use: Start the test with just one button press, blow for 3-10 seconds and get clear results via the digital display and colour code. Compact and portable: Weighing only 80 g and with practical dimensions, the tester fits in any pocket – perfect for use at home, when travelling or during outdoor activities. Practical set: Included in delivery: breath tester, USB charging cable and operating instructions. Easy to use and reliable results – ready for use at any time.