CasioLINEAGE (LCW-M170TD-7AJF) 6 MULTIBANDS RADIO SOLAR MENS WRISTWATCH (JAPANESE MODEL)

This watch starts with a decent quartz movement that should itself easily be accurate to one second per day. It adds to that the ability to sync daily with the National Institute of Standard's atomic clocks. So it always shows the exact time -- correct to the second, exact enough for human purposes. And it is lightweight, comfortable, nice-looking and never needs winding, batteries (it tops up its battery with solar power), or maintenance. This is the perfect watch.Almost. If you can't reliably receive the shortwave signal from Colorado then its a good quartz watch but probably no better than others that cost less. (Other reviews suggest ways around that problem. The instructions suggest keeping it near a window at night, though I haven't had to do that.) There isn't a lot of visual contrast between the dial and the narrow hands (much less than suggested by the Amazon product photos) so seeing the time can sometimes take more than just a quick glance. (The same watch is available with a blue dial that should provide more contrast, though that dial differs slightly from this one.) The watch needs light to keep the battery charged, though the need is not extreme or bothersome; a normal day for normal people should be fine. The electronic functions available are a bit fiddly but no more so than in most watches with such functions. (Like most people, except for the time and date I don't use them anyway.)My seller delivered the watch with a set of English instructions (along with the Japanese instructions made for this Japan-market product). They are long and in small type. But setup takes only a couple of steps. First, choose your location by selecting from a list of major cities; there is one in your time zone. The watch will then set itself to your local time and to the shortwave frequency of the time signal available to you. Second, set it to your language unless you want to learn the Japanese symbols for the days of the week. (Those who live in Arizona also need to turn off the automatic Daylight Savings Time function.)A few reviewers complain about the watchband but I don't quite know why. Perhaps they expect and want the weight of a steel band; titanium is much lighter. The band seems sturdy and looks fine. But it is very long; you will need to remove at least a few links unless you are, literally, a gorilla. Instructions for that are not in the box but are easily available online.

In a suburb of Philadelphia, I never successfully synchronized the watch with the Fort Collins, Colorado signal, despite trying different positions by windows at home and work. A search online revealed two options: downloading an iOS app to play the (real time) radio signal from my phone next to the watch, or hanging the watch from the handlebar of a bicycle (a youtube video suggested this.)Since the former method could be tried at any time, I gave it a shot and it seemed to work: the watch updated the "last successful radio signal update date/time" but the little bar under RCVD (radio signal Received) in the LCD did not appear. Trying the latter method worked like a charm: presto, the update succeeded overnight and the little RCVD bar appeared. This worked every night I tried it.After mulling over the helpfulness of a metal tube (trapping/amplifying the signal?) I fished a tin can from the recycling bin (after cleaning it, of course) and slipped the watch over the can. Bingo! This has also worked, resulting in successful updates every night, while letting me leave my watch (and can) on my desk/table (i.e. and not the garage.) Not an elegant looking solution, but effective.I already had a watch link adjustment kit from Amazon (now no longer available) on hand: if you remove excess links yourself, be wary of small, short tube lengths which drop out, in addition to the standard pins. If you are the handy sort, you will figure out how to re-incorporate these. If not, consider having a jewelry store adjust the band, for you. Leaving out the short tube lengths is an invitation for the pins to slip out unexpectedly (and the watch falling off your wrist.)

This watch arrived yesterday, and the actual item is even more handsome than in the picture. I'm expecting that all the good things anyone has said about the movement of this watch are still true. The movement is the same as in my previous watches.What I wanted in the first place was 1) solar charging, 2) radio setting from the Navy Observatory in Colorado, ease of setting time zones, and 4) a dial light. Got all that. Plus, most recent one is suitable for more formal occasions.Very minor shortcoming: the alarm signal and all the others (countdown timer, etc.) is very faint. I could easily sleep through an alarm.Now the bad news: This watch came directly from Japan (Narita via Tokyo), with DHL as the carrier. The package made stops at customs facilities in Cincinnati, Ohio, Maryland, and Boston. each time there was a delay. DHL wanted information about the retail value of each component (case, movement, battery, bracelet), and it had to add up to the amount billed. I had to get estimates from ChatGPT do do so. And then they wanted ID info, including Social Security number, a page from my last income tax form, and a couple of other things. I'm glad they didn't want my first-born (well, he's 58, so a little late) and the left side of my family jewels.It would have been nice to have some warning.