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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.
I Simply read the directions and I expect to have this watch for long, long time. It’s a very handsome watch. Read the directions on how to keep the watch clean. The watch calibrated almost by itself after I unscrewed the crown. I placed the watch on my bedroom window sill for 10 hours in partly sunny conditions and that was enough to power the watch thru the solar battery; I could now read the illuminated dials and numbers in the dark. This watch has digital day/month/date display. To me, The LED button is a disguised as part of the frame, underneath the number 6 on the dial is a rectangular button, that’s the LED button. I don’t a watch with Bluetooth, picture display, or step counter. I can live without all that technology. I really like this watch.
I got the blue version. The strap is a matching blue, for those who asked. My wrist size is between two holes on the strap, so I swapped for a 24mm metal bracelet.
I found the watch easy enough to set up, after googling for a pdf of the manual for Casio 5571. The included booklet is incomplete.
I would have done away with the mode indicator at 10:00. It’s totally redundant, as the lcd also tells you what mode you choose. Overall, I love the design. It’s very understated.
I have too many watches, but am a sucker for novel features, and wanted a neon illuminator watch. It didn’t disappoint. The neon illuminator lights up the outlines of the minute and hour hands, and the tip of the second hand. It also slightly charges the lum.
Rotate your wrist in low light, and the illuminator comes on automatically.
The dimmest pic is with the lum almost gone. The next dimmest is after a couple of 3 second flashes of the neon illuminator charged the lum a little. The neon illuminator is lit in the pic with the lcd illuminated. The last is with the lum fully charged, next to a San Martin (brightest lum I have).
In the shade outside (indirect sunlight, I guess) the outlines of the minute and second hands have a faint, metallic green look to them, but I couldn’t capture it on camera. In regular light or direct sunlight, they’re white.
The watch gets the time over the air every night, so I don’t have to worry about accuracy.
This is simply one awesome watch! The PRW-6600 series from ProTrek is extremely user friendly. It packs a ton of features for an incredible price. What I love most about this watch is it's atomic timekeeping feature. A signal containing the precise time, day and date, measured by an atomic clock accurate to one second every 100,000 years, is sent directly to the watch using standard radio waves. I live in the US on the east coast and it has no problem receiving the radio signal. If you change timezones...simply pull out the crown and change it to the city within that time zone and this watch will automatically adjust to that timezone. Majority of the issues from previous Protrek models have been fixed with the 6600 series. This watch is also extremely comfortable. I own a couple quartz movement watches and it is a tiny bit annoying when the battery dies. You could simply take it somewhere and have a jeweler change out the battery or do it yourself...but it usually takes me months before I find the "time" to do that. Aside from owning a couple automatic watches, this watch is solar powered which means this watch will outlive any other battery operated watch on the market. The pictures I attached do not do it justice. It has great loom and the digital display has been easy for me to read despite some of the negative comments regarding that. But seriously, this watch is all analog! So anyone having issues with the digital display...you honestly don't need it. My only gripe about this watch is that the dial window is mineral glass and not sapphire crystal. But for the price I honestly cannot complain. Truth be told...I love this watch. It's basically a smart watch that doesn't need to be plugged into a charger every few hours. No you can't make any personal calls or say, "Hey, Google." But for anyone that loves a watch with soul and practical functionality, this watch has something for everyone (i.e. World Time, Stop Watch, multiple alarms, timer, compass).
Very easy to set and adjust. A vast improvement in simplicity over my previous Pathfinder. Band is super comfortable. With the solar and radio time setting it is truly set once and forget. Good night illumination too. Only minus is I would prefer white numbers on the dial for slightly better visibility (for senior eyes). Hardly a deal breaker, great watch all around.
This is one of the best watches that I have owned. And this is the 6th Pro Trek watch that I purchased from Amazon. It’s so comfortable and easy to set up. It is very practical. Very easy to read. I would highly recommend this watch.
I was afraid I wouldn’t like the lume and led on this watch, as many said not bright enough and impossible to see in dark. Not true!!!! It is plenty bright enough in the dark. The led lights up the line on the markers just enough as well as the hands, but man the light up hands are great and bright in the dark as well as the led. The lume lasts quite a while and the led charges it in the dark pretty well. The lume blows away the lume on my safari protrek.
All that and the looks with the wocci brown/tan stitch band I added looks great!
The blue face and band make this an attractive watch. It has several great features, including the triple sensors (altimeter/barometer, compass, and thermometer), solar charging, Multiband 6 atomic time keeping, and Smart Access pull-out crown for setting functions. I have small wrists (5.5" circumference), the band fit well, and the case size was not too large for me. The silicone band is quite comfortable. The hands are "bold" and easy to read for the time, as is the smaller dial that indicates which function is active. The downside: The digital read-out window is of the "negative" type, meaning that it has lighter chararcters against a black background. It is nearly impossible to read unless you are in very good light and it is illuminated at the correct angle. Furthermore, the illuminator is not at all bright, so trying to see the LCD panel in the dark is practically impossible. Plus, the luminescent hands and numerals fade rather quickly in the dark. I have tried a few Casio watches with the negative LCD panel, and I have returned all of them. Now when I look at Casio's, I first look for analog/digital and then the type of LCD panel and stick with ones with dark characters against a light background. I suggest Casio ditch the negative LCD's. But that having been said, if you will not rely on the LCD panel very often or at all, this is an attractive watch with a load of convenient features, but many of them depend on being able to read the LCD panel. It can be done if the lighting is right, but it's not easy otherwise.