KA-19638 is an professional alcohol tester, it is small, exquisite and delicate design, it is so easy to carry in your pocket, car or handbag! LCD digital, which can make detection more efficient. With voice alarm function, when a alcohol content is excess, the buzzer will alarm automatically alert. No need to use a blowpipe, just blow into air the hole, this way it is healthy and easy to clean. English Manual – Better to be safe than sorry after you’ve had a few drinks! keep this portable Digital Alcohol Tester in your purse or car so you’ll always know how close you are to the legal limit.