If you really need a "watch" (not the brand name to brag about), this is the one. 10yr battery, 100M WR. It is affordable yet elegant. 10yr battery life means you will never need to worry about it stopping. The size is 40mm (including crown), not the 37mm as stated in the description. I measured it myself. I am wondering how Amazon got the size, more likely imposing the watch image with a background scale. It should fit well if your waist is not too small or too big. The band looks good but low quality. It is really difficult to remove a link. Some reviewers recommend jeweler to do it, but I just did it myself, with a knife and a screwdriver. (you really cannot use the regular watch tool to remove the link because it is not the regular type of push pin out and then remove. you need to use knife to open it up. It is difficult but still doable). The lens is very reflective and appears not high quality. You get what you paid for.