New from Tokyoflash Design Studios is a watch that will test your vision and make you look sophisticated at the same time. It’s so ‘00s to tell someone who struggles to read an analog clock that they can’t tell time, but with this tricky digital watch you can pretty much call anyone out. Hiding in plain sight within a green and black optical illusion, the time can be revealed to the less perceptive eye with the touch of a button. But don’t tell anyone the secret when they ask you for the time in the mall. Who knew that being nice to someone who doesn’t have a watch could be so much fun?