PRW3500 Series | Pro Trek | 100M WR | Compass | Alt/Baro-Thermo | Tough Solar Power | Atomic Timekeeping | 1-100 SEC Stopwatch | Countdown Timer | World Time

So far, this watch is amazing. It looks bad-astronaut with the full-size look, military vibe, and negative display. The features exceed what I ever imagined I would want in a watch, but now that I have them, they are fun to experiment with and I really enjoy knowing they're there. MUST HAVES: - The solar power and multiband 6 (atomic sync) are must-haves, for me. I don't want to have to babysit and potty train my watch. I don't serve my watch; my watch serves me. - I wanted a watch that could display the time while the stopwatch and/or timer was in use. - I wanted big digits so I wouldn't need glasses to check the time. - I wanted digital -- while I love the elegant appearance of analog watches, I can't get over the fact that the hands obstruct vital parts of the watch every hour. That's unforgivable to me, hence my requirement for digital. - I don't want my watch to make me look like a dork. The ProTrek checks all the boxes. DISPLAY: The readout is extremely easy to read. Negative displays have a negative reputation as they are often difficult to read but this one is clear and crisp at all angles. Bright sunlight does NOT wash-out the display, it actually makes it more readable. In dim lighting it is harder to read than a positive display but it is readable, and besides, the backlight (and auto-backlight) are there for a reason. Additionally, given the large nature of the watch, I felt that the negative display suited it better. The dark appearance makes it easier to get away with having such a beefy watch. (I use the same strategy for my size 15 shoes: the darker the better.) BEEP: The alarm and beeps are plenty loud. For comparison, I also have the Casio G-SHOCK 5610u and that has a very hollow and weak alarm. The ProTrek is louder, but not obnoxious by any means. It's probably typical and what anyone would expect. EASE OF USE: If you want a watch to just throw on and intuitively know how to use everything, this one is not for you. It is not hard to use if you are willing to spend a few minutes to get acquainted with it. You will need to look up your latitude and longitude coordinates online (or on a map, I guess) and set them in the watch so that the sunrise and sunset times are accurate. BATTERY and MULTIBAND 6 SYNC: The first day I had it the atomic sync would not initiate, manually or automatically. I soon discovered ATOMIC SYNC WILL NOT WORK WHEN THE BAROMETER WEATHER ALERTS ARE ON. I'm not sure the reasoning behind this, but I assume it is a feature, not a bug. Neither the auto-receive nor the manual-receive work while the barometer weather alerts are on. (Go to the barometer mode, then press and hold the barometer button to toggle it.) WEIGHT: The watch is heavier than my previous 5610, but it's not heavy. It reminds me of my metallic band Pulsar watch. It's a very normal weight for a watch. Overall, it's not a cheap watch, but it's not extremely expensive either. It will satisfy your desire for usefulness and having cool gadgets without getting into smartwatch territory. I have finally stopped endlessly browsing watches on Amazon and youtube. I have found what I was looking for.

If I could only have one watch, it would be this one. I love this watch. This is the watch I wear all day no matter what I am doing. I have gotten paint acetone, automotive oils and greases, detergents, and all sorts of other substances on it. I have banged it against countless objects. I truly unapologetically use this watch. Here are the det's: Comfort: This is the most comfortable watch I have ever worn. This watch doesn't start to weigh on your wrist, get itchy, or make you feel like you have to shift it around from time to time. I wear it all day. I have even fallen asleep with it on. Durability: I am impressed with the amount of abuse this watch takes. There are some expected scratches, but even the wrist band and buckle are holding up well. Charging/battery: This is always on hi, even if I wear longs sleeves. It gets plenty of charge just from driving around or being outside for a bit. Functions: I had to calibrate the thermometer when I got it. It isn't going to give you a good reading on your wrist. It will pick up your body heat. I have found it accurate when it is not worn. Other functions work as advertised. Screen/reading: I have the autolight function enabled so it turns on briefly when you aim your wrist at your peepers. It can't be read well in the dark without it. The light is bright enough to read the full display. The light button is easy to locate and press with no light. In normal to low light, it is very easy to read. I prefer this display instead of the light back screen with dark numbers, like the previous model. But I'm sure that is subjective. Buttons: Everything is easy to press and find. There is a lot of texture on the buttons. Even with gloves on, it is easy to operate. To sum up, this is a quality watch! I won't go on about all it does and the size, that info is in the listing. It does what it promises and does it well. I would highly recommend it!!

I've had this watch now for about six months now and I can say i really like it. Not a big fan of digital watches so before i made the purchase i read a lot of reviews on both the analog and digital protreks. It seems like the analog protreks just have too much of a hard time getting the information to the wearer quickly. Hands have to adjust and it just seems like so much work. This protrek gets you the info you need quickly and the modes are easy to navigate through. I really like the barometer feature. I was on a backpacking trip in early March in northern Minnesota and as I was just getting my pack on, the barometer change alert sounded letting me know there was a significant drop in pressure. About 2 hours later, I was in the middle of white out conditions. Then several hours later, i get another alert that there was a rise in pressure and low and behold, the snow tapered off and the sun started shining a short time later. The pressure change alert has proven useful several other times since. I have become to rely on it. I like how you can keep an eye on the barometric pressure while in the time keeping mode. Very useful. I like the no maintenance of this piece. I enjoy putting on my watch and not worrying about it getting damaged. Its well built and can take whatever abuse you throw at it. I wear mine every where. Swimming in pools, lakes, hottub sitting, biking, even the shower sometimes when I forget to take it off. I've had mine covered in mud from a tumble i took hiking through a marsh. A little dip in a river and it was as good as new. The battery has stayed on high since i got it. Once a month I set in on my window sill for a day to get it some juice and that seems to be enough. Ive had no problems getting a signal from the atomic clock. Usually has a signal by just after midnight. All in all, I anticipate this watch being obsolete long before it will wear out. Update: October 2017 I purchased a Suunto Core because I lost my Protrek. I liked the design of the Core as well as what I've read about the accuracy of the sensors. I was not impressed with the durability or the accuracy of the sensors. I felt like I wasted my money on the Core and it wasnt cheap by any means. I wished I had just bought another Protek instead of the Core. Then I found it under the seat of my truck and I was happy once again. If anyone is on the fence on a Core or Protrek, go for the Protrek. Ive put them both through their tests. The Core falls way short. I didn't have any of the manufacturing problems that seem to plague the Core but it feels like a $20 watch. On a hike, the storm alarm alerted me that a storm was approaching.........while I was in the middle of a severe thunderstorm. A little late on the alert. My Protrek has always warned me ahead of time. I will admit, the Core is a studly looking watch and I got lots of comments on it. My only comment on my Protrek was about how ugly it is. My wife is right, it is not an attractive watch. I usually only wear it when I'm in the woods. Any other time I'm wearing something that doesn't look like what every teenager in China is wearing. .

My response to the rise of smart watches has been a desire to go retro, and when it comes to retro digital chic, nobody beats Casio. My first purchase was a Casio F91W-1 Classic Resin Strap Digital Sport...

NB:: THE CASE FOR THIS WATCH, AS SHIPPED IN Q1 2017, IS A HARD-COATED (EPOXY?) RESIN MATERIAL. THE CASE IS *NOT* MADE OF TITANIUM, THE CASE BACK IS STAINLESS STEEL. ONLY THE WRISTBAND IS TITANIUM. That caveat aside, my ProTrek PRW-3500T-7CR (Module 3134) is an emergency replacement for a tragically and irretrievably lost PathFinder PAG70-T (Module 2872). [While the PAG70-T has no Atomic Clock sync capabilities, what it has, in spades, is a very sharp looking, "dressy" appearance, as great looking with any suit as with any wilderness survival loadout. The PAG70-T's case is Titanium-clad-over-resin, with a stainless steel back and titanium wristband; no rotating outer bezel (which I have no need for), At the time of loss, my PAG70-T was still going as strong as Day One on it's original CTL1616 solar recharged battery. Even though the built-in calendar was due to expire in 2039, I was only going to cross that bridge in 2040, The countdown timer has final 1min, 50sec, 40sec, 30sec, 20sec, 10sec then 1sec interval warning beeps before the final countdown chime. If left uncancelled, the countdown timer would automatically lap and repeat the original countdown. I found that to be an unbelievably useful countdown feature. All PAG70-T alarms are clearly audible across a reasonably quite room and/or under a jacket sleeve. I seriously miss that PAG70-T. For all that I put it through, not a single scratch or nick anywhere on it.] On paper, the PRW-3500T-7CR out-classes the PAG70-T's specs. Atomic clock sync (which works every time for me, on a daily basis, some 2000kM from Fort Collins, with a "L1" signal strength, as reported by the watch). Built-in calendar through 2099. 200M static water resistance. So-called "V3" triple sensors. Etc. But I'm still getting used to the PRW-3500T-7CR, and I'm not quite as impressed with it as I hoped to be. The alarms on the PRW-3500T-7CR are surprisingly and disappointingly WEAK. A covering jacket or other thick sleeve is more than enough to smother these weak alarms. The countdown timer has no final minute intermediate chimes and cannot be set to auto-lap when left uncancelled. Alarm durations are 10 seconds, at best, and are not configurable for longer notifications. One of the five daily alarms is a "snooze" alarm that repeats at intervals for 30 minutes. But what good is a snooze alarm if you can't hear it? I'm forced for the time being to wear my PRW-3500T-7CR on my right wrist. For some reason, after several reference temperature calibrations, the V3 thermometer gives closer to actual room temperature readings, while uncovered wrist worn, than the PAG70-T; typically less than 5 degrees Farenheit warmer than ambient air temp. Sleeve cover will obviously skew wrist worn temperatures higher than ambient room, due to confined body heat.. The V3 compass is very accurate when compared with GPS readings and the PRW-3500T-7CR compass can be calibrated (by 1 degree increments) for declination (the PAG70-T has no compensation for declination). The V3 barometer is reasonably accurate following a 12-day series of daily calibration check/settings at constant reference altitude. The V3 altimeter is surprisingly and sometimes wildly inaccurate when compared with GPS, even more so than the older PAG70-T. I am seriously doubting that any amount of altimeter calibration is going to achieve more accurate readings, but I am optimistically still continuing with once daily calibration checks at reference altitude. Sunrise and sunset times are highly accurate, once longitude and latitude are manually and correctly entered into Settings. This is not the same as merely setting the Time Zone, unless you happen to actually be located in one of the preset Time Zone cities. My PRW-3500T-7CR illuminates very evenly across its face in a dark room, even though there is only a single light source, eminating from the left side of the watch face, If your's doesn't illuminate evenly across the entire watch face, then you may have a lemon worthy of prompt return/replacement. The PRW-3500T-7CR is significantly larger than the PAG70-T, which may present problems for smaller wrist sizes. I had to remove four (4) wristband links, two on each side of the locking clasp, in order to achieve a functionally comfortable fit. WRISTBAND ADJUSTMENT NB:: Each link pin of the titanium wrist band is retained in place by a single 1mm diameter split "clinch barrel ring" that too readily slips in and out of the one "receiver" side of the short prong of each link (when disassembled). When fully and properly assembled, the link pin passes through this tight clinch barrel ring and the clinch barrel ring prevents the link pin from sliding out of the wristband (preventing band failure) by sheer friction with the link pin. What is not immediately apparent to an inattentive observer is that the link pin also holds the clinch barrel ring in its proper place, between wrist band links. Once a wristband link pin is removed, THAT CLINCH BARREL RING WILL *IMMEDIATELY* FALL OUT OF PLACE AND CAN BE VERY EASILY LOST. I know of absolutely no source for replacement clinch barrel rings for this wristband. When I disassembled my wrist band, I did so over a reasonably large disassembly tray (18inx18in), with a surrounding raised lip edge (1") and a non-bounce white tray liner. As each link pin was carefully removed (observing the directional arrows engraved on the wrist-side of each removable lnk), using only the force absolutely necessary and a proper pin removal tool, I could see the TINY clinch barrel ring fall onto the tray liner (and then set it aside for safekeeping). When reassembling shortened links, I had to use needle tip tweezers to place the clinch barrel ring back into the RECEIVER SIDE of the stub link, oriented UPWARDS toward me, so that *gravity* would hold it temporarily in place. Then I used a positionable vice grip to hold the two links together, while I reinserted the link pin, through the links and the clinch barrel ring. The vice grip temporarily held the links together in-place, such that I could rotate the band, with the clinch ring now facing downward, as I gently drove the link pin back into place from above. This was the least tricky and most first-try successful way to adjust the length of the wrist band. Should you decide to adjust your own wrist band, whatever you do, do not lose the clinch barrel rings. Without them, the link pins will fall out and you will have band failure. The only durable and reasonable kludge for a lost clinch barrel ring would be "red"-grade (permanent) ThreadLock on BOTH sides of a fully inserted link pin. As always, Casio Customer Service is DISMAL at best. If you get a lemon, replace it with the seller right away for one that works 100% as advertised. Casio Customer Service depends on their products not failing -- and for the most part, when a Casio watch works AOK from Day One, it will continue to do so until you lose it or destroy it. Casio Customer Service has never ever "been there for me" and I have learned that lesson only too well.

Great watch! Solar, charging and sonic time, compass altitude, and much more offer. A real good price.

Bought it exactly 4 years ago (2020) albeit for $160 while on sale. This has been my daily "driver" and I don't baby it (nor abuse it)- swim in the ocean all the time, go hiking, etc. Do rinse it after salt water exposure, but am surprised all the buttons still work and not gotten stuck. Backlight is excellent, display very easy to read in (or out of) the water. Never ran out of battery (solar charging). Barometer/Altimeter and temperature sensors are the main reasons I bought it for all my activities. Only wish it had tide tables, but otherwise this has been the perfect activity watch. Replaced the wrist band recently, other than that it works without issues. Barring some minor scuffing/scratches around the bezel, it even looks good still. Zero scratches on the crystal, probably due to the raised "lip" (crystal being recessed well below the bezel) that takes all the beating. There's occasional fogging of the crystal (due to temperature changes?), but seems to be common with all Casio watches I've owned. Will definitely buy another one (or the upgraded version), especially when it's under $200 again. Was considering upgrading to a quad-sensor Gulfmaster with sapphire crystal (GWNQ1000-1A), but seeing the condition of the used ones on eBay, which all seemed to be severely scratched up, decided to keep using this one till it dies. Seems Casio just hit the jackpot with this ProTrek for quality finishing (ion-plated) vs. a more expensive Gulfmaster that ends up looking like schit...

Still loving this watch. Bought it December 2021. Almost 5 years old. Still looks great. Solid watch, band is super comfortable. Love the automatic light turn on which is done by a flick of the wrist and it’s set for 3 seconds. From time I leave the watch in the window sill so it can recharge. All good. Every now and then I go to a You tube video as reminder to change a setting. I don’t wear the watch every day but it looks good and has not be a problem at all. I really like the negative display . This was a good purchase.