I bought this for my daughter.
I can’t believe the technology Seiko packed into this tiny watch. It’s titanium, solar-powered, and it can update itself by radio signals every night. Once I figured out how to change the time zone, this watch has worked flawlessly in North America using the WWVB time signal. It updates itself every night at 2 AM and my daughter doesn’t even have to think about it.
Though, it is important to note that this watch is intended for the Japanese domestic market and Japan doesn’t observe Daylight Savings Time. That means the watch doesn’t automatically correct for DST. So, twice a year you’ll have to change the time zone - but that is very easy. But other than pushing a button twice a year, and going into the sunshine twice a year to charge it, this is a completely maintenance-free watch. And it looks nice too. I am really impressed with it.