I got a wicked fast delivery from a Casio Authorized Dealer in Japan, on a JDM GW-B5600BC-1JF.
Casio just released this phone this month, IIRC.
features:
Bluetooth
Solar Power
6 Band Radio
This will update with the US WWVB "atomic" clock signal (Ft. Collins, CO) and 5 other locations
(Japan(2), China(1), UK(1) and Germany (1)) so if you're a world traveler, most of the populations in the Northern Hemisphere will be covered.
Should you be away out of range of those signals, or they're turned off, which might be a possibility for the US next year (2019)(lets hope not!)
you can use the Bluetooth feature to sync with your phone (Most phones (I want to say "all", but if I do, someone will prove me wrong) keep the same atomic clock
accuracy as they're updated from
WWVB or more likely in sync with a
GPSDO)
With Bluetooth, you can also more easily set alarms, and world time pre-sets a lot easier than pushing the buttons repeatedly on the watch.
You can even use the watch to find your phone! (as long as they're in range of each other)
To use the Bluetooth features, you'll need to install their app on your phone.
here it is, as I received it today, I'll have more pics later, as I ordered a 5 ring Nato strap and adapter for it, they should be here next week.
(box for everything, box for watch, warranty, tags, instruction, watch)
sorry for the crappy samsung phone pix
the 'yellow' is actually more like a gold mirror-ish. quite nice.
eta: I didn't buy from here, just a link to get more info if interested.