Casio M5610U with a metal mod I picked up for $99 and I love it! Pick up and go with never a care for durability or accuracy. World time across 5 presets, that you can swap back and forth with your home time at a press of buttons, solar powered, and radio receiving for auto updating of time and date.
What's your cheapest watch in your collection?
Mine runs -3sec/day.
I use it as a dirty job watch but need to reset it every few weeks :(
It's a great watch otherwise but I'd have expected more from quartz