Waterproof Timex Watch with velcro band

Waterproof Timex Watch with velcro band. It's a light weight nice compact watch. I took several photos of the back of the watch which is hard to do because of the way the watch is attached to the elastic band. This watch is sold as is and needs a battery. I think the battery number is CR 12 16. See photos. If you take it to a jeweler, I'm sure they will be able to change the battery.