Kits now available! http://blog.zakkemble.co.uk/nwatch-wristwatch-kit/ Digital wristwatch with a 1.3" 128x64 OLED display, AVR ATmega328P microcontroller and...
The Military Wristwatch
Tokyo Flash: RPM SS Blue LED Wrist Watch Review
intro. about gear train of wristwatch
Finding North Using A Wristwatch
DIY Digital Wristwatch
Military Wristwatch part 2