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 less than 5 seconds. Touchless: The blow-test alcohol tester does not require an additional mouthpiece. The sensor is equipped with a cleaning chamber that removes interfering substances, allowing only alcohol to be detected for high-precision measurement. (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 provides long service life when fully charged. Press the start button to begin the 10-second warm-up phase, then blow into the breath inlet for 3-10 seconds. Results are displayed digitally with three color indicators for clear, intuitive reading. Lightweight and Portable: This breathalyzer weighs only 80 g, with dimensions of 14 cm x 2.6 cm x 2.6 cm, making it easy to carry and store. It fits conveniently in your pocket, car, or backpack. Ideal for home use, outdoor camping, parties, and other occasionstest your breath whenever needed. Package includes: 1 x breathalyzer, 1 x charging cable, 1 x user manual. Our products undergo strict quality control before shipment. If you have any questions or suggestions about our product, please for assistance. High precision: The breathalyzer delivers 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 device accurately measures alcohol content by detecting alcohol in your breath, ensuring hygienic use. Easy to use: Start the test with a single button press, blow for 3-10 seconds, and receive clear results via digital display and color-coded indicators. Compact and portable: Weighing only 80 g and designed with practical dimensions, the device fits in any pocketideal for home, travel, or outdoor activities. Practical set: Includes breathalyzer, USB charging cable, and operating instructions. Ready to use anytime with reliable and consistent performance.