Reliable and easy to use breathalyser for driving safety and social occasions Key benefits Fast, reliable driving readiness assessment with a precision semiconductor alcohol sensor. Accurate measurement range of 0.00%0.19%BAC / 0.01.9 g/l to judge whether you can drive. Hygienic and noncontact design with automatic shutoff after testing; no need to use a blow tube. Ultraportable at only 58 g, easy to carry in a handbag or pocket; USB rechargeable. Versatile for parties, bars, home use, and cars; suitable as a thoughtful gift for someone who enjoys drinking. What it does Provides a quick result to determine driving fitness based on a precise alcohol sensor. Range: 0.00%0.19%BAC / 0.01.9 g/l for testing friends in bars or family at home parties. How to use Builtin 300 mAh battery with USB charging. After turning on, warm up for 15 seconds. Blow into the alcohol tester for 5 seconds. Wait 3 seconds and the result will be displayed on the LCD screen. Hygiene and design Noncontact operation for hygienic use; does not require a blow pipe during testing. Lightweight and portable at 58 g for easy carrying in a bag or pocket. The unit automatically switches off 15 seconds after completing the test to conserve battery life. Versatility and applications Versatile use: breathalyser with policeprecision accuracy can be used at parties to check whether you or your friends are drunk, or as a fun social tool to connect with others. Suitable for use at parties, bars, at home, and in the car. A meaningful gift for a family member or a friend who enjoys drinking. Specifications and features Sensor: precision semiconductor alcohol sensor. Measurement range: 0.00%0.19%BAC / 0.01.9 g/l. Battery: builtin 300 mAh, USB charging. Warmup time: 15 seconds. Test duration: blow into tester for 5 seconds. Display delay: 3 seconds before showing result on LCD. Weight: 58 g. Autooff: 15 seconds after completing the test. Hygiene note: noncontact operation; blow pipe can cause bacteria. Use scenarios At a house party with friends to quickly check who should consider alternate transport. In bars or social events to help friends assess driving readiness before leaving. In the car or before driving after a night out, as a quick reference tool for safety. As a thoughtful gift for someone who enjoys social drinking and values safe transportation.