This is a MUJI watch, the "Circle Watch." It has a unique design with the dial printed on the glass, which, combined with the pale green color of the glass, makes it very stylish. (The blurriness in the second photo is not dirt, but the shadow of the dial.) Diameter: 38mm, Belt width: 20mm The belt is not the original. I've put it in the men's watch category, but it's not too big, so there's no problem for women to wear it either.