There are some optical illusions that you look at for a good fifteen minutes, and try as hard as you might, you simply cannot figure out what you’re looking at. The TokyoFlash Kisai Night Vision Watch is one of those illusions that made me feel like a complete buffoon after figuring out how to look at it. Mostly because I was confused for a few minutes until that point.

This brightly colored LED watch merely looks like a bunch of lines at first glance, but once you realize that the minutes are visible on the inside, everything becomes clear. The hours are marked in easily recognizable place around the face of the watch, and there is no �minute hand� as the actual numbers are displayed. The watch is rechargeable and only needs a new charge via USB about once a month. Having a battery that can go for about 300 charges means it will be a couple decades before you need to replace it. This arm jewelry will set you back $129, but only during the launch. If you wait and get one at a later date, you’ll be looking at $149.