I wear a watch when I know I'll be going some place where I may have to wait, such as a dentist's office, or when I know I'll be out of the house for an extended period of time. I just put a new battery in it. I thought I wasn't going to be able to click the back cover of the watch into place, but there's a trick to it. Anyone who can't get the cover back on their watch after changing the battery, Google it, and learn the trick.