CasioSGW100 Series | Digital Watch & Compass | 200M WR | 100 SEC Stopwatch | Twin Sensor for Direction & Temperature | Low Temp Resistant | World Time | Auto Calendar | Multi Alarm

I looked around a lot for a watch like this, and read a lot of reviews before buying it. I wanted a good, dependable EDC (every day) watch that could time me on runs, hikes, and help me out on the trail with some general direction, all for less than $75. I actually ordered the comparable TIMEX (Expedition Trail T49612) version of this watch and sent it back. The TIMEX was huge, hard to read, and just didn't look good (greenish markings on huge black rubber case). I seem to keep coming back to CASIO because they seem to just "get it right" for me.What's the difference between the SGW100B-3V (this watch) and the SGW100-1V, you ask? It's the same watch, as near as I can tell, except the 3V has a high-quality nylon wristband and the 1V has a rubberized sports band. I chose the 3V because I have not had good experience with rubberized wristbands. They aren't too comfortable, either. I wore a G-SHOCK for a few years until all the eyelets in the band tore into one, long slit. This didn't hold my watch on too well, and I lost it in the ocean. The nylon on the 3V is great. It is durable, looks better than the rubber wristband, and is comfortable. It doesn't pull on my arm hairs like the rubber always did.Now, for the watch itself. Great readability and functionality. I like the how the seconds are displayed on the line under the hour and minutes, so your eyes instantly fall on the 4-digit time. The ILLUMINATOR feature makes all the digits shine, but not the face. This makes the watch extremely readable in the dark, but you're not going to be able to use it like a mini-flashlight. The 4-button controls are easy to master. Here's a pro-tip for you: Rather than straining your eyes to read the tiny operation manual, look up the PDF online from Casio and use the zoom to read it like normal text.The digital thermometer is just as others have described. On my wrist, it usually shows about 85 degrees (no matter what the air temp is), but it is accurate when the watch is unworn for 30 minutes or more. The temperature is factory calibrated, but you can check it against another thermometer and adjust it by a few tenths of a degree if you wish. I think the thermometer function is helpful for waking up in a tent or bivouac with your 3V next to you and checking the temp before you crawl out of your bag.The digital compass is excellent. I have checked it against several other commercial and mil-spec compasses and it's readings are pretty dead on. Even though CASIO says it's not meant for accurate land navigation, but more for general direction, I feel it could hang in there for some basic land nav. There are 16 directional arrow indicators around the outside of the face for indicating North, so your arrow is less accurate than your digital compass degree reading (360 degrees). The compass needs to be user-calibrated something like every 100 days. This means spinning your watch 360 degrees while it is taking readings. I'm really not sure what the purpose of this is--it might have something to do with ensuring the magnetic sensor has not become inaccurate due to ambient magnetism or a bad bearing. There is also a declination adjustment (look yours up online by ZIP code) so that your watch can show you true North. I play a little "game" with the compass when I'm bored. If I'm somewhere I've never been, I'll mentally guess which direction is North and check myself with the watch. I know; I'm a nerd.The world time feature is great with plenty of city time-zones and a DST toggle. If your friend is overseas and you want to know if it's too early/late to call, it's literally ONE button-push away to check. I keep mine on LON (London) time so I can quickly see UTC.Standard stop watch. Elapsed, split time, and two-finisher capabilities. The buttons are pretty easy to push, and this helps with reliable start and stop. We've all been there, with our thumbnail on a tiny metallic button, when we tell our friend, "Ready... Set... Go! Wait, I mean, Go! Now!"Standard timer. Keeps going when viewing other modes.Four alarms WITH snooze function. Not bad!Overall, the watch just looks good. I would say it gives off a hiker or possibly military-type look. The different colored markings on the case and the silver/grey bezel kind of catch the eye. You can tell it's not a cheap drug-store watch just by the look of it (which is more than you can say for some of the CASIO styles). If you're not used to a large watch, you'll think this is pretty big. It's fine for me. I do have to lift it slightly up on my arm when getting into the front-leaning rest position (push-ups) or else it digs into the top of my hand, so that's something to consider.I have three minor nit-picks of the watch, but not enough to dock a star-rating on a stellar watch:- You can only scan through the time-zones in WT mode in one direction.- I can't remember which mode this was, but at one point I was adjusting a value on the watch and the positive (+) button was lower right and the negative (-) direction was upper right. This seemed backwards to me.- The wristband is attached the case by a pin which is held in place by a small steel buckle that is hinged to the case. Most other CASIO cases have a giant protrusion that encloses the strap and pin. It makes me wonder if the connection is a little weaker than on other CASIO watches; but time will tell.Overall, this is a great watch. The 200M rating is reassuring for any aquatic activities. The strap is comfortable and the watch itself is surprisingly light. I bought this watch thinking I would only put it on when wearing jeans, work clothes, or clothes for hiking, but I've ended up wearing it every day since I bought it. I would not wear it with coat and tie, however--that's kind of where I draw the line.

Hi...I may bounce around a bit, but please bear with me...Thanks !!!So I have a couple relatively expensive analog watches, which look nice and keep time well...They serve their purpose...My only gripe is that their purpose doesn't entail much... Time and Date, THE ENDSo, why this Twin Sensor watch ?I own one type of a Dakota digital clip watch (pictured) that has EVERYTHING I want in a watch, but it's a huge, bulky bastard, and it's annoying to have to keep on a belt loop for everyday use...Great for camping/hiking though, if that's your thing...So I set out to find a digital wristwatch that could do everything this camping/hiking watch could do...It took more time than I thought it would to find the perfect combination...At one point I figured it simply didn't exist...The biggest obstacle were terrible descriptions which either told me too little, or were misleading...Okay, long story short, found it...Here's what I wanted that my clip watch has...-All digital Time, Day, Date-An alarm that made plenty of noise, not vibration-A dependable compass-A countdown timer that chimed once the time was up-A fully functional, real deal, stopwatch-Full backlighting, not just a bulb that lit up only part of the face-Hourly chime option-Buttons that beep so I know I've engaged it-Water resistance-A mesh strap rather than rubber-Multiple time zone capabilityThis Casio Twin Sensor has everything on that list, but it keeps on going...This list below includes what's ON TOP of everything included in the list above (I'm going to treat it like a computer for ease of writing)-The hompage indicates AM or PM-The homepage indicates which functions you are using on different pages, so if the timer is on for example, there is a timer symbol on the homepage-There are FIVE alarms, including one with a snooze function-The compass has more features than I can write down easily...Let's just say it's fully functional...Can do everything a compass should...-The stopwatch is also a fully functioning, real deal feature, just like the compass...-Backlighting is not your usual backlight...Instead of illuminating the entire face to see the black icons, this backlight does the opposite, and turns everything that is black into green...And it's bright...You can also adjust it from 1 second to 3 seconds...-Each notification has a slightly different sound...-Thermometer, but I've never taken it off of my wrist to bother using it...No idea how well it works, but if the rest of the watch is any indicator, it should work just fine...-Safe to use buttons underwater...-Hourly chime can be turned off-Countdown timer can be looped so that it automatically starts over, and over, and over...I use the timer on a 5 minute loop because that's the most common time I use it for...-There are a total of 5 different pages, including homepage...-The second page indicates the time of another city or country so you can quickly check the time in the state or country of your choice...I believe there are over 50 city codes to choose from...This next bit of info may be a "So what ?" to some folks, but I thought it was pretty clever...A VERY COOL DETAIL OF THIS WATCH-As you scroll through the pages, each page beeps...They all sound the same except for the homepage...This means, if you have remembered enough, you can access and use functions by sound without having to look at the watch...Regarding the green strap...If you don't like green there are kits available to change it to black straps...I bought one of these kits but when I saw how dark the green actually was, I decided not to bother with the black after all...In many cases it's a dark green that's almost indistinguishable from black...(It's only an obviously green strap under a strong light, like with the Day Glo bulb I took the picture with)...Here is the name of the black kit anyway, just in case dark green is not to your liking...WRISTARMOR 25mm Nylon strap Compatible with Casio SGW-100/SGW-200/GW-3000B/GW-3500B Leather watch bandI'm leaving a LOT out, but I hopefully I've written something of use to you...This is an extreme amount of watch for the money...HIGHLY RECOMMENDEDGood Luck !!!

I was about to return this watch in frustration. I was trying to calibrate the compass, without any success. My particular set of instructions was missing a few key steps, and as I result I would go through the process and almost immediately get the "Please Calibrate" message over and over and OVER.I doubt I'll be allowed to include a link to the 5-minute video that filled in the missing steps and solved everything for me, but here is the title - if you need it, I hope this information is enough to help you find it. (yes, "declination" is misspelled as "declication" in the video title. )Casio SGW100 / SGW-100 Calibration Tutorial - Twin Sensor: Compass Bearing, Declication, Thermometer