Tokyo Flash, has a new watch and it's another flair of optical trickery. Originally submitted by Samuel Jerichow of Germany to the Tokyoflash Design Studio, the Kasai Online features an encrypted display of the current date and time in the form of continuous unbroken lines that can be broken with a flick of the wrist.

The watch has a built-in accelerometer that senses the twitch and reveals the information through a falling lines animation. Available in silver or black band and a blue, red or natural LCD. You can pick it up for $170, but it's $30 less for the next 48 hours at TokyoFlash.