I have an unusual Coleman (the lantern company) watch that has a strong flashlight built into it, and it takes three batteries to run.  The watch has taken a beating over the years, and the flashlight batteries don't seem to last as long as they should, but as strange as it sounds, having a flashlight on my wrist has become something I can't seem to live without now, so even though I've purchased other watches, I keep returning to this one.

I've been taking it to jewelers for years for battery changes, and although where I live jewelers are in the habit of changing batteries simply for the cost of the batteries, I've wondered whether this could be a doomed business strategy as have watched our local jewelers struggle to stay in business in our shifting economy.

I'd say I'm a moderate do-it-yourselfer, not because I'm good at it but rather because it embarrasses me, on some level, to have to find "experts" for certain tasks that seem well within the boundaries of common sense (to me).  Even though this watch represents a daunting battery-swap chore because there are many tiny screws and pieces to remove once the back is off the watch, it's still within my capacity, I'm happy to say, to do it.

This tool was the missing piece, and was priced low enough that I felt like I couldn't pass up the opportunity to try it.

I'll say that this type of spanner appears to be a tricky tool to use, no matter who makes it (in my limited-scope opinion), but I was able to remove and restore the watch back without a hitch and without scratching the back of the watch.