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My new Casio Oceanus OCW-S100

85K views 81 replies 42 participants last post by  usclassic  
#1 · (Edited)
I've spent a couple of weeks researching on the internet for a new watch that meets my needs:

  • Accurate
  • Rugged
  • Easy to operate
  • Low maintenance
  • Simple
By simple I mean: showing only the time and day of month. For any other functions that I sporadically need (alarm, second time zone, day of week) I prefer to use my phone.

I considered many different brands and types, ranging from Swatch to Grand Seiko and tried to base my findings purely on reason, not emotion.

When reading various blogs, comments etc. one often comes across statements claiming that X is better than Y because of Z. I tend to disregard such claims because they're rarely referenced, rather subjective and don't directly relate to (my definition of) quality. For example: "Rolex is the best watch because they make all movements in-house".

I find Casio's G-Shock range very interesting for their accuracy and ruggedness, but I don't like them for their multitude of superfluous functions and busy faces.
So I've decided to get the 3-hand Casio Oceanus.


Until last week I've worn a digital Casio G-Shock GW-700DE for about six years. But I've also owned (and flipped) premium Swiss watches such as Rolex, IWC and Omega.


Automatic vs Quartz
Quartz is more accurate and requires less periodic service. Moreover, to have an automatic watch serviced probably costs more than a brand new quartz watch.
While automatic watches don't need regular battery replacements, the same goes for solar powered or spring drive quartz watches.

Swiss or Japanese?
I think premium Swiss watches are overpriced. Yes, the quality is fine, but you pay a too much for the brand name. Maybe as a consequence of expensive ad campaigns featuring Tiger Woods (Tag Heuer), Pierce Brosnan (Omega) or John Travolta (Breitling).
Moreover, Japanese watches appear to be more accurate than Swiss ones. The most accurate non-satellite watch I know of is the $2500 Citizen Chronomaster (+/- 5 seconds per YEAR). Compare this to $4500 for an 'entry level' Rolex Chronometer (+/-2 seconds per day).



The Pinnacle of Accuracy
Die-hard watch aficionados will be appalled, but when it comes to keeping time, nothing beats a plain quartz movement enhanced with a radio wave or satellite receiver.
Many modern quartz watches also have the added advantage of a perpetual calendar. This means you only need to adjust your watch for daylight savings time or when changing time zones.

Radio Wave vs Satellite
Both ways of synchronizing time have their pros and cons, but satellite (GPS) watches cost more and are bigger, yet offer no advantage in terms of accuracy. The only reason I can think of to pay extra for a GPS watch is if you don't live within range of a radio wave transmitter.

Case Material

  • Stainless steel is very hard and inexpensive and thus the ideal material to make a durable watch case and band. I personally don't mind the superficial scratching that steel is prone to.
  • Titanium is 30% lighter than steel but also a little bit softer.
    Newer titanium watches often have a coating to make them more scratch resistant. This coating does not make the titanium harder, it just ads a hard outer layer. This is why the links in a titanium band are often not fastened with screws but with pins.
  • Gold costs about $40 per gram, but you will have payed at least three times as much if that gold is in your watch. Furthermore, gold is very soft, making it prone to scratching and deformation, especially the band.
  • Platinum is one of the heaviest metals on this planet. It costs about as much as gold, give or take, but a platinum watch contains about 95% platinum while a 18K gold watch contains only 75% gold. But this doesn't account for the difference in price between gold and platinum watches, the latter are considerably more expensive. My guess: watch and jewelry manufacturers exploit the fact that platinum is perceived to be more expensive.
    Platinum is somewhat harder than gold, but still much softer than steel.
  • Ceramic is too hard for my taste. I don't want a watch that can break or chip if I accidentally drop it.
The weight of a watch is not a factor for me. Light or heavy, I'll get used to either after a couple of days.

My pick
The best watch for me and great value for money: Casio Oceanus OCW-S100-1AJF



This is the ultimate 'set and forget' watch:

  • Solar cells
  • Radio wave synchronization
  • Perpetual calendar
  • Shock resistant
  • Sapphire glass
Despite my preference for stainless steel over titanium, no other watch meets my needs as closely as this one. I've also looked at the Grand Seiko quartz models and the Citizen Attesa but since my old G-Shock has never let me down, I decided to stay loyal to Casio. It's a Japan Domestic Market (JDM) model so I bought it last week while I was in Tokyo, but it's also available online from various sites such as Seiya Japan and Rakuten.
 
#3 ·
Great watch.
I think it's pretty difficult to beat that watch, certainly in terms of value for money.
Full Stainless Steel, Sapphire crystal, Super accuracy.......what's not to like?! :-!
 
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#9 ·
I thoroughly enjoyed reading your well reasoned list of criteria and preferences. I also agree with about 90% of them, so I guess it is no surprise that this exact Oceanus is very near the top of my "to-buy" list. I have a few questions for you if you don't mind.

* I have heard the blue accents look a bit cheap and even "toyish." What is your opinion on this?

* Any chance you have a digital scale and can provide an accurate weight?

* Why choose to exclude emotion from this decision? Do you think you were successful in doing this?

Mike, feel free to weigh-in if you like! Great photo!
 
#7 · (Edited)
Great Choice! I have one on the radar.
How is the fit and finish compared to one of your more premium watches?
Is is Titanium or SS with TIC coating?
I had the understanding that the entire watch is Titanium but some comments said it is Stainless Steel.
 
#10 ·
How is the fit and finish compared to one of your more premium watches?
It's very good, I haven't been able to find any flaws.
Some people may argue that the Grand Seiko's fit and finish is even better, but even if they were right, it wouldn't justify the price difference to me.

Is is Titanium or SS with TIC coating?
It's coated titanium.
 
#15 ·
Congrats on your new watch. Enjoyed reading the review.

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OCW-S100 is 40mm hardened titanium, sapphire, solar, atomic, perpetual calendar, 30 time zones, solid end links, drilled lugs, Made in Japan.

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OCW-S100-1AJF.OCW-S100-7A2JF

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#18 ·
Got one myself imported from japan.
I did find the accents of blue a little over the top rather than the subtlety of say a suburst dial on the orient mako.

Still a nice watch although annoyingly the hand alignment is off on mine.
 
#34 · (Edited)
I bought it last week while I was in Tokyo, but it's also available online from various sites such as Seiya Japan and Rakuten.
I ordered this watch from Seiya at around noon Tokyo time and it was shipped out the same day. It was US $530 including EMS shipping but probably can be found for a bit less on Rakuten. But Seiya always has great reviews so was worth a bit extra for me. Are the street prices in Tokyo about the same? I don't even know what the sales tax is in Japan.

I was looking for a rugged go-anywhere-do-anything watch as well and considered automatics form the usual Swiss and Japanese brands. But couldn't really find the best watch for a reasonable price. And the magic of automatic watches is starting to wear off so need more quartz in my collection. I already have 2 Pro Treks so very familiar with the technology and the convenience of atomic synching, quartz and solar charging.

This Oceanus may hit just the right spot. Thanks for the review. And anyone feel free to post more pictures while I wait for it to arrive. :)
 
#35 ·
I really want to pull the trigger on one of these. Is anyone familiar with the T150 model? OCW-T150-1AJF. I tried posting a link from the casio japan website but I don't have enough posts to put links on here yet.

I'm trying to figure out the differences... it looks like the T150 is the 2014 model year version of the S100 which was 2012? It looks like it maybe doesn't have the curved sapphire glass of the S100, it has only silver markings instead of the blue edges, and I think the clasp has a slide adjustment comfort mechanism. Plus it has that roman numeral XII for the 12.

I guess the biggest question would be if it allows for strap/band changes or if it also has that proprietary center lug as well.