High precision alcohol tester: The alcohol tester adopts advanced high-precision semiconductor sensor technology, which can quickly and accurately measure blood alcohol content and quickly determine whether you can drive. 10 interchangeable blowing nozzles: The alcohol tester is equipped with 10 blowing nozzles that can be cleaned and recycled. The blowing nozzles are made of edible PP, and your family or friends can easily use different blowing nozzles for testing. If you need to purchase a separate blowing nozzle, you can search for LAMJAD spare blowing nozzle, model D800. Memory mode: The breath test can provide accurate results within 10 seconds, and can store up to 50 test results. Note: After removing the battery, the saved recording will be deleted. The alcohol tester requires two AAA batteries, which are not included in the scope of supply and must be purchased separately. Easy to use: Insert two AAA batteries (not included, need to be ordered separately). After heating the alcohol tester for 19 seconds, the blue light on the mouth flashes, indicating that air can be blown; During the air sampling process, the mouth emits blue light. Always on. After continuous air bloom for 5-6 seconds, the blue light goes out, indicating that the air bloom sampling is completed and the test results are displayed. Portable design: The alcohol tester is designed to be compact and exquisite, allowing you to place it in your bag or backpack anytime and anywhere. for weddings, parties, banquets, or other social activities, providing protection when driving under the influence of alcohol. If you find any damage to the instrument or missing accessories, please feel free to contact us at any time. We will reply to you within 24 hours.