Chosen Solution

Can’t get to battery

@bubbashady69 post a couple of images of your watch., back etc. That way we can see what you see. For some of the Armitron watches you would need a watch case opener. On the side of the watch there should be a gap between the back and the watch. Slide the watch case opener into the gap and apply a little bit of pressure to pop the back off. Adding images to an existing question