Here is a fun watch for folks who are looking for a geeky wristwatch rather than a fancy smartwatch. The Binary Watch has a bare PCB design and uses a low power micro-controller to display the date and time. Each watch has two female 16 pin connectors and a 9 inch length of ribbon cable. You can cut the cable to your desired length. Since the circuit board and all the other components are exposed, you should probably not wear this outdoors. The watch is priced at $35.