You are at an awesome party and had a beer too much…or did you? You should not drink and drive but if you believe that 1 or 2 beers isn’t problem then at least check if you are over the limit and if you are able to drive safely. This portable Keychain Breathalyzer will even tell you when will your BAC return to 0.00%. You can even see your entire history on your smartphone , including optional photos, notes and drink logs.
$52