Casio Men Digital Quartz Watch with Resin Strap F-105W-1A

Product Information

The first step was to simply immerse the watch under 5.5″ of cold tap water while pressing the buttons and observing for any signs of water ingress. Already, the watch proved it is far more than just rain resistant, so [Rotislav] decided to disassemble the watch and learn how it achieved this. People all over the world love the F-91W because it just works. The only complaint anyone ever has about the F-91W is that the nightlight is terrible. Solution? Buy an F105W. Problem solved.

F-105W-1AWYEF | CASIO Collection | Watches | Products | CASIO

and neither Walmart nor Target carry it as far as I know. Personally, I had to buy mine online just to get one. After wearing the W59, I do consider it better than the F-91W. Same functionality, same great legibility, same great reliability, bigger buttons. Works great.For those not in the know, the F105W is like the F-91W, but with one rather important improvement. The nightlight is a million times better. This is why ILLUMINATOR is so prominent on the watch face. Where nightlights are concerned, Casio really got it right with this one. It has that just-right luminance that makes it a joy to use. The aqua color and contrast of the nightlight is also perfect. You couldn't ask for better. Because of this, it isn’t uncommon to see individual watches exceed their rated pressures, and also to fail well below their rated pressures, even in the same make and model for cheaper watches.. While I described the W93H as a bit of a dud for me in my last article, the F105W is a total winner in my book.

Should I get F-91W or F105W? : r/casio - Reddit Should I get F-91W or F105W? : r/casio - Reddit

A watch’s water resistance in many cases is entirely notional. It’s pretty rare to see a cheap watch marked “ISO 2281”. The manufacturer estimates a pressure that it estimates there is an acceptably low probability of failure and calls it a day. Even under ISO 2281 testing is only a lot sample procedure. This is why the recommended use scenarios are absurdly conservative, it’s not that going for a swim can generate more than 3 bars of dynamic pressure, it’s that the 3 bar rating is a guideline not a guarantee. On my 6.75" wrist, the F105W lays more flat than the F-91W, which is something I very much appreciate so the watch stays put. Does a nightlight really matter that much? However, as good as the F-91W is for a simple and good wristwatch, what works against it are its buttons. They work, but can be annoying to press as they are just a smidgen too small. Although I've not tested this, the F105W is supposedly 27g in weight while the F-91W is 20g. I don't feel the 7g difference if there is one, and I don't think anyone else would. Technical amendments and errors excepted. The sizes in figures do not correspond to the original sizes.In Walmart for example, you'll easily find the F-91W there as well as the F108 and the recently introduced W217 (very similar styling to the F-91W but larger with notably better nightlight.) But both of those models have an amber nightlight that while it does work very well, it's not the cool blue one. The resin housing is the ideal everyday companion. It is durable, lightweight and relatively insensitive to cold, heat or other external influences. The daily alarm reminds you of events that recur every day, by emitting an audible signal at the set time.