Watch

You wanna watch that will survive the zombie apocalypse?   Well then you probably want a Maratac.  Simple.  EMP proof.  Rugged.  About the cheapest mechanical movement you can get that has jeweled bearings and a sapphire crystal face.

Almost as good, but much cheaper, but not glow in the dark is the Chinese made like this.

Plenty of cheap quartz out there.  As long as you think EMP won't be an issue.