Nuclear and solar live together in harmony with the Casio Wave Ceptor watch. No, there's not a nuclear reactor on your wrist, just updates from the official atomic clock. This means once you set your time zone, you never have to reset the watch until you travel. When you do travel, just pick a different city and you'll continually have the perfect time again. Always.
The solar part eliminates one of my pet peeves---having to constantly shell out money and spend time getting watch batteries replaced. With this Casio model, the sun keeps it running and it doesn't take all that much exposure either: it will run five months on a full charge before you'll start getting a warning icon telling you to get out of your cave. (If you live in an Arctic zone and it's winter, a lamp will do the job.)
I've been using this watch for a week and a half now and once I got past the biggest drawback, I've been loving it. The drawback was the steel quick-clasp watchband. It looks nice, it's comfortable, but it's definitely not one size fits all. So when it came sized for a sumo wrestler's wrist, I opened the manual to find out how to adjust the band. Just one problem: there's nothing in the manual on how to do that. Or on the Casio website. So you're on your own.
After some serious Googling, rooting around for my precision screwdrivers, then wrestling with the band under a bright light, I finally got it to fit. I guess the manufacturer figures the watch store will take care of all that for you, but if you buy it as a gift or get it online, be prepared to invest some time learning and poking. Pictured here are the "missing links" that I guess I should just toss.
But the watch itself has a lot of nice features and is carefree once it's set up. This model has a regular hands and a second hand, then the day and date are displayed digitally. There's a stopwatch and an alarm function if you dive into the manual more. The Wave Ceptor is water resistant to 100 meters and has luminous hands that glow in the dark. Get the full specs on Casio's Wave Ceptor site, where you can see the women's model too.
At a list price of $120 (and usually retailing for $100 or less), this watch looks and functions far above its pay grade. You might have to search around to get the particular model you want though. When I tried the "where to buy" section of the website for my million-person city I got a message of "I'm sorry there were no results that match your request." I didn't think a Casio watch would be all that hard to find, but you can definitely get this model online at Amazon.