This is a Casio watch that Aimyong wore, making it a hot topic! It's a popular old model without the WR frame. I've been storing it at home, but I'm selling it to declutter. It's working normally, the backlight lights up, and I've confirmed the stopwatch function. I'm not sure about the details because I don't have the manual! Since it's a used item, I cannot accept any claims or returns, so please take a look at the photos and only purchase if you are satisfied!