breathalyser breathalyser_watch_sensor_open

Behold: the big-ass-1980s-Seiko-Digital-Sports-Watch-looking Kisai Breathalyser ($100).

Breathe in to the side of the backlit LED timepiece and it displays your BAC: green for sober, yellow for jarred, red for drunk.

It runs on a USB rechargeable battery that lasts a month with normal use, and (demo’ed by the charming Scottish chap above) features a sobriety testing reaction-time game.

It also tells the time.

uncrate

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