Design submitted by Logan from the USA.
Another very well thought out concept design from Logan. He says: “This is a response to commenters on my previous designs who asked to see more of my work with patterns. The Cairo watch has a sandblasted aluminum face with holes cut out in a pattern called the Cairo tessellation (a pentagonal tiling that supposedly was made with paving stones on the streets of Cairo).Behind each of these holes is either a yellow or a red LED. When the LEDs are off, you can enjoy this mathematical pattern, and, when they are on, the minutes are displayed large in the center, using 3×5 pentagons per digit, and the hours are indicated in the normal clock position using 2 pentagons. Super easy to read. The strap is the same style as Kisai Sensai silver — the appearance of a smooth one-piece, but actually adjustable at the back.
The 2 pentagons that show the hours are always the opposite color of the neighboring minutes digit(s). When the hours=12 or 6, one of these pentagons is red and the other yellow.
If it would not add too much cost to the design, AM/PM could be distinguished by reversing the colors for PM (e.g., first minutes digit red instead of yellow). This would require that each LED be capable of displaying both red and yellow, instead of the simpler design where each LED displays only red OR yellow.
This could be offered with a black case and strap, too, provided that there would be enough contrast between the black case and the LEDs when turned off (maybe, the LEDs when off would actually be a very dark gray, or a shinier black, so there would still be contrast). That might look very interesting — black case with a black pattern.
The pattern of the holes in the case gives the watch a striking appearance even when off. The style is futuristic, but not in an aggressive way — it’s more of a vision of the future where mathematics is part of our everyday lives and the designs around us.”