This ESP32 powered watch packs a gorgeous circular 240×240 ... but there’s also an enhanced edition of the PCB that adds another 4 MB of RAM, a micro SD slot, and a Quectel L96 GPS receiver.

Then you can build your own, just like [taifur] did. The watch rocks a simplistic, bare bones design with the PCB acting as the body of the device itself. It’s not great for water resistance ...