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?
https://preview.redd.it/6u7vqgmez5wb1.jpeg?width=2160&format=pjpg&auto=webp&s=19cb65470cc7cbd3c17d82a3229ecd3809e2c7b3
Timex Expedition - £70!