It's 4:20 Somewhere

I think it's hillarious that they chose 4:20 for the display.

clipped from www.impactlab.com Fingernail Displays TX54 is a disposable timepiece that is worn on the user’s thumbnail. While its translucency makes it blend seamlessly with the hand, a selection of text color options and a glow feature that activates on command make it easy to read.