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?
I could not find my watch back when the COVID lock down started in our area. I think the lock down started March 17th and I was called March 18th to provide protection to a couple pf local businesses. Needing a watch, I stopped in the local pharmacy and picked up a $7.00 digital watch.
TBT, it was about the only one that I'd wear out of the 30 or 40 they had. It is still running. I haven't worn it since that detail ended because I got back into watches and got a couple Hamilton's and a micro brand.
Besides that, my 3 mechanical watches are more accurate than the seven dollar digital!