This is an LED watch from Eagle USA. I bought it about 10 years ago, intending to use it someday, but when I put in a battery, the time display became faint (see photo 4). It's hard to see during the day, but it's not completely invisible. It's easier to see in the dark. Therefore, I'm selling it as junk. The wrist size is about 18.5 cm. It has become a valuable watch now.