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?
That’s what I’ve got. It’s my work watch because it’s so small, slim and light and my watches get fucked at work. So this one stays out of the way more and can still take quite a beating.