CasioPRW6600Y Series | Pro Trek | 100M WR | Compass | Alt/Baro-Thermo | Tough Solar Power | Atomic Timekeeping | 1-100 SEC Stopwatch | Countdown Timer | World Time

Strengths:- A generous combination of features. Having triple sensors, multi-region radio time sync, and solar power all in one watch is a boon. It's a high price to pay for it all, but I'm not regretting it.- Straightforward access to functions, with the crown only needed for changing numerical values.- Very readable in the dark without needing to activate the light, thanks to large hands/numbers and amazing glow-in-the-dark materials.- Good radio reception, able to get strong signal from WWVB all the way out in Massachusetts.- Compass almost holds calibration for more than a day, which is great for a digital compass.- Slightly less "tacticool"/overcomplicated appearance than most primarily-functional digital watches, which I like, although it is still quite visually busy.- Alarms work the same and are just as loud as those on any other Casio watch. Some reviewers have said that this watch is too quiet, but mine is loud enough to wake me up in the morning just fine.- Extremely quiet. I have very acute hearing and am easily annoyed, but I can only hear this watch tick when it's right by my ear, so it's never a problem. It's not completely silent like an all-digital-style watch, but it's close enough.Weaknesses:- Somewhat bulky, though well within my limits for size and weight.- The resin band it comes with is a bit uncomfortable, comes undone a lot. Better third-party options are available, though.- The stainless steel bezel is not very resistant to abrasion and has no plastic guards to protect it, making this a substantially more fragile watch than I was hoping.- Weird and garish illuminator. The UV LED it uses to light up the hands and numbers doesn't get them very evenly, and everything glows an actinic blue-violet color that hurts to look at in the dark. The LED that lights up the digital display also leaks a lot of light out at a low angle, perfect for accidentally distracting someone sitting to your left. Overall, using the illuminator is really kind of a painful experience, saved only by the glow-in-the-dark dial that stays visible for hours and often saves you needing to use the light at all. It's certainly better than nothing, and if I absolutely had to do something with the digital display in the dark and didn't have a flashlight, I'd tough it out, but this does really make me miss the blue-green electroluminescent backlights from Casio's lower-end watches.- Terrible countdown timer, bad even for Casio. Not only can you not set it down to the second, but it also doesn't go higher than one hour, which is a downgrade from my old SGW-100 which could do up to 24 hours. I guess it's enough for most cooking, but a lot of cheaper competitors out there these days have countdown timers that can be set up to 24 hours and down to the second, which makes this stick out. I'm honestly not sure why it's so limited, since there's plenty of room on the display for a multi-hour timer and it would be easy for the menus to support setting it.- Unscrewing the crown to change settings is very slow, and so is winding it back in afterwards. You apparently can't leave it out without compromising water resistance either, which is somewhat concerning. I guess it's somewhat nicer than just using buttons to increment a value up and down, but only a little bit, and it's definitely not faster. It's also very easy to overshoot your target thanks to somewhat strange fast-scroll behavior.- Using the digital display at certain times of day can be difficult because the hands get in the way. I know this is just a fact of life for analog/digital hybrid watches like this, but it's not mitigated very well here. The display is very tiny, and the hands, especially the minute hand, can cover a lot of it at once. There's a trick where you can press the light button and the bottom left button simultaneously to make the hands temporarily move out of the way, but it resets whenever you press any button, meaning that you can't keep the hands parked while you use the stopwatch or something. It's always technically possible to see every part of the screen by peeking at it from multiple angles, but between about 24 and 36 minutes after each hour of the day, it's kind of awkward.I'm happy with the watch overall, and can see myself wearing it for years to come - but it might also be the first watch that I actually bother to take off before doing anything that might risk scuffing it, and I'm not sure how I feel about that. Next time, I might go for something a little cheaper and better-protected against abrasion, even if it means sacrificing a few of the nice features this one has.

This review is mainly in response to the two star review from the truck driver who couldn't figure out how to set the time.The watch is Multi Band 6, which means that it will set the reference time (UTC) automatically, but it's up to the user to specify which time zone the watch is in.Therefore, you will need to press the lower left button until the watch reads "M Time" for Timekeeping mode, then unscrew the crown and pull it out. The watch LED should read "CITY". By turning the crown, the second hand will point to one of the city names on the dial and the hour and minute hand will move to the correct time for that city. For example, I'm in Chicago, so I move the second hand to say "CHI" and then you press the crown in, and screw it back down.That's pretty easy.As for the people complaining about mineral crystal getting scratches. Yeah, duh. It's a watch. If you don't want the face to get normal wear and tear, you really need to buy and apply a 37mm watch face protector (most are tempered glass) and apply it to the face of the watch before anything bad happens to the glass.As for the complaints about the strap, it seems solid enough. $80 to replace it with a Casio strap is kind of ridiculous when you can use any NATO strap of the appropriate size and they shouldn't run you more than $20-30, even at a jewelry store. Some will even install them for you.As for the alarm? Could possibly be louder, but this is as loud as any Casio watch alarm I've ever heard.The price was decent as for the Black Friday deal. I would not pay anything close to MSRP on a watch because every watch company plays MSRP games.The accuracy of the watch is exceptional. The quartz movement is accurate to +/- 15 seconds per month from where you set it, even if for some reason you wanted to turn off Atomic Timekeeping and go manual, which is typical for modern quartz movements. Very few mechanical movements have anywhere close to this sort of accuracy.In the default mode of Atomic Timekeeping on, the watch is accurate to within 1 second of the official time broadcast in your region of the world. The second hand on my watch is in sync with the NTP time on my computer, as set by Chrony on Fedora GNU/Linux.In short, you should never have to set the time on this watch in nearly any part of the world. You just need to set the time zone and let the watch take care of the rest. Casio suggests that if you can't get the watch to lock on to the Atomic Time signal, to keep it near a window for a while during the time of day that the signal is strongest in your region (which is usually during the night in the United States).The watch is powered by solar or UV light which charges a CTL1616 watch battery. These are known to be fairly reliable and can last more than 20 years. One thing you do not want to allow to happen is to let the battery go completely dead because it can kill the battery out permanently. It's suggested to leave it in a window that receives sunlight for a while every so often.The reviewer who couldn't figure out the time zone control also couldn't figure out how to read it at night. There's a backlight and the button is at the bottom of the watch. Push it, the watch illuminates for a couple of seconds.Overall, the operation of the watch is quite simple once you've used it for a while.If there's a good complaint about this watch, they should probably put a G-Shock case around it and to try keeping the look about the same. But that's a nit. If you plan to put this watch through serious abuse, get a G-Shock and you'll like that better.