“While it requires a companion app on your smart phone, it works quickly and accurately. Also, the privacy (no sharing) option in the app allows you to keep all results ... private.”
“I received my key chain Breath Alcohol Detecter as a Christmas gift and everyone I know wanted to try it so I purchased more mouth pieces. it has been a source of entertainment as well as providing safety awareness. You never know if that last drink will put you over the legal limit or impair your judgement.”
