IT'S the smartwatch created for potentially foolish people.
Japanese watchmaker Tokyoflash launched an innovative wristwatch overnight that not only tests your sobriety with a built-in game, but tests your blood alcohol level with a breathalyser built into its side.
The Kisai Intoxicated watch, offered for a launch price of $US99 until Friday night in Australia, shows the date and time, and offers alarms, as you would expect from any wristwatch.
But a breathalyser is also hidden beneath what looks like a watch dial and can be used to rate the wearer's blood alcohol level from .001 per cent to as high as .2 per cent - four times the legal Australian driving limit.
To test sobriety, or a lack thereof, wearers must unscrew the watch dial, wait while its alcohol sensor heats up, and blow into the outlet from a distance of just 2cm.
The watch's breathalyser display, to the right of its LCD screen, showcases three levels of drunkenness.
No alcohol detected earns a green light, .001 to .06 is classified as "getting drunk" and is indicated by a yellow light, and results of .061 up to .2 are officially classified as "drunk" and show a red light.
The stainless steel watch with rechargeable battery also features a "sobriety game" for those who want a second opinion, asking wearers to press a button to align a moving column with the centre of the screen.
Despite the Kisai Intoxicated's potential to rate alcohol consumption for safe driving, even its makers don't advise relying on its judgment alone.
In the last page of its manual, Tokyoflash advises: "This watch is designed for entertainment only. The retailer does not warrant that the results obtained from this breathalyser will be completely accurate or reliable and accept no liability for consequences arising from its use."