How to build your own mechanical watch | Tick Tick Tick Tick
DIY LED Wristwatch - YouTube
How to Make a Smartwatch DIY - YouTube
Buy Single-Chip Digital LED Watch Electronic Clock Kit Transparent Watch DIY LED Digital Tube Wristwatch DIY Kit : Transparent Online at Low Prices in India - Amazon.in
DIY Breadboard watch using a QDSP-6064 bubble LED display and a 14 pin ATtiny84. It's rechargeable with a USB-micro connector to PSU underneath the breadboard. Here's the schematic and documentation: https://flux.ai/jharwinbarrozo/breadboard-wrist-watch :
Build Your Own Watch
Solder:Time DIY Watch Kit – Shop Iowa
This DIY 3D-Printed Wristwatch Has a Built-In Laser, for Reasons - Hackster.io