The breathalyzer watch will tell you when Happy Hour starts as well as when it's time to stop drinking.
The watch will feature a built-in breathalyzer that can be accessed by uncapping a hole on the side of the watch and breathing over it for five seconds. The watch will then respond with a color-coded screen: green for no alcohol detected, yellow for still within legal limits, and red if legally drunk, and the results will also be displayed a bit more precisely by a bar graph.
Although there are other breathalyzers on the market already, most of them work with smartphones and require rather bulky extensions.
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