F-91W
$19.61Features: Digital sport watch in rectangle case featuring alarm, chronograph functions, and night light33 mm resin case with mineral dial window, Quartz movement with digital displayWater Resistant and Ribbed resin band with buckle closure Description: A tried and true style great for casual wear. With its daily alarm, hourly time signal and auto calendar, you'll never need to worry about missing an appointment again. Black Casual Classic watch with a Resin Band.
Reddit mentions
“You’re going to have a hard time finding a G shock for $20. The Casio F-91W is all you need, but does leave something to be desired for ruggedness. It will last forever, but is not…”
“This is really the best answer. The Casio F-91W is the GOAT! Even if you have more money, it's the best bang for your buck. Accurate time keeping, light, durable, long life and…”
“Been using my Casio AE-1200WH for 10+ years. Also have the F-91W but the small size may deter you if have large forearms like me.”