This product is an alcohol tester designed for iPhone, iPod and iPad, it’s small, exquisite and it’s so easy to carry around! LCD digital display, which can make detection easy to read. With a unique detector, it can effectively identify cigarettes, coffee smells and prevent non alcohol gas to interfere the detecting results. Voice alarm function, when alcohol content exceeds, the buzzer will alarm automatically. No need to use blowpipe, just blow into air hole of the tester, this way it is healthy and clean.