I had the pleasure of replacing the battery in Wendy's watch today.  It wasn't hard, but like anything that doesn't seem hard, there were a few bumps along the road.  After I finished removing the four microscopic screws, I promptly dropped one on the carpet under my desk, which couldn't have a busier color pattern.  I looked for a while but decided it would probably still work with only three.  I took the back cover off and figured out that it was nearly impossible to actually get the battery out.  I spent a few minutes trying different things while attempting to keep all the delicate, cheaply-made components intact.  After a few minutes, I gave up and used brute force (which wasn't much because it was a watch), breaking a little plastic piece that holds the battery in place.  I figured, eh, let's see what happens; it'll probably still go back together.  I went to Walmart to find a replacement battery, and there weren't any in the electronics section.  The jewelry department had them though, and $5 and two batteries later (they come in a double pack) I was in business.  I looked under my desk at work a few more times just in case I developed Superman vision, and lo and behold, I found the lost screw.  I put the new battery in the back, forced the cover in place, put all four screws back in, and it worked.  This sums up pretty much every experience I've ever had trying to fix things. #psychology