This Watch Tells You When It's Time to Stop Drinking

A watch from TokyoFlash can tell you if you've had too much to drink. The company's Kisai Intoxicated LCD watch has a built-in breathalyzer.

When you need it, turn on the breathalyzer on the watch and blow into it. Once it processes your breath, you'll have a reading of your level of intoxication ranging from green for sober to red for drunk. If it hits red, it's probably time to stop buying drinks and head home.

Check out the video above to see how it works.

For the first 48 hours of sale, the watch costs $99.