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Casio Oceanus Atomic Setting

I purchased a very expensive "Oceanus (Casio) OCW-M700 solar-atomic watch. I cannot get it to set itself on the east coast of Florida (left it on my ROOF- the highest point around). I have followed all of the miserable manual's instructions to the letter (I'm very technically oriented), and have fooled with this for over three months. I am at wit's end. And, it seems impossible to set this watch manually like any cheap (NON $900.00) watch. I have THREE atomic alarm clock that all cost under US$20 that are all accurate to the second with one anohter without having to do a THING to them. HELP! The

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  • Anonymous Jan 07, 2008

    On Dec. 23, 2007, I purchased an Oceanus OCW600, and cannot get it to receive the Atomic Signal from Colorado. I also have two inexpensive Atomic Clocks which accept the Signal perfectly and keep identical time.

    So far, I have been in touch numerous times with the Retailer, and today he admitted that he had no answers. He referred me to a Technical Help Number, 1-800-327-1266. I will call the number tomorrow.

    I have also tried to set the watch by the Manual Time Setting Procedure, and that also does not work for me.

    My name is Leonard Lann. My e-mail address is: [email protected]

    Any help that you can offer will be appreciated.

  • artpo May 25, 2008

    I also have the 700 series black titanium Oceanus watch (US version). I agree that the instructions are primitive and not friendly at all. Why doesn't Casio hire someone who can write clear and simple instructions to this complex piece of equipment that any consumer can understand? The current instructions are too challenging for the price one has to pay for the watch. I would be happy to write such a manual if paid for it. Did you understand this paragraph? Good! See? It can be done.

    Question: Does anyone know of a simpler manual for this watch? If so, where can I acquire it?

  • charles1000 Apr 11, 2009

    My Oceanus suddenly started synchroizing 15 minute slow. I can say that it does this reliably.

  • robbage Apr 25, 2009

    I've got a black OCW-M700 as well and haven't even gotten out of the gate! How do I know when I am in Timkeeping Mode, or any mode for that matter? I have tried repateadly to set my Home City (Seattle) but can't seem to manage it.



  • Anonymous Mar 16, 2014

    My atomic watch had a tower on it with the seconds it is gone



3 Answers

I agree with emc301 about the downloaded instructions, the instructions for setting the time manually are fairly easy to understand there. I also just purchased a OCW-700, and found the same problem with reception on the East coast. I live in central North Carolina, on the east side of the Appalachian Mtns, and I was beginning to think there was no hope for atomic calibration after three days of failed attempts. Last night however, I charged the watch under a bright light for about 6 hours, then left it sitting on the west side of my house, facing a westward window of course, and it finally received a signal. Also, hate to break it to all of you, but I bought my Japanese version from an ebay store for only $500. It took about a week to get, but the only difference is that the brand name on the face is Oceanus with Casio underneath, instead of just saying Oceanus. Everything else works just like it's supposed to, and it even came with the tool to size it at home.

Posted on Jan 27, 2008


I had checked in on Jan. 7 2008 with my inability to download successfully. I have since solved the problem.

1. I exchanged my original OCW 600 TDA 1AV for another
identical model.
2. I let the watch charge in direct Sunlight for a couple of hours.
3. I determined where Northwest was in my home.
4. I put the watch around the pillow that accompanies the
watch, and pointed it in the Northwest direction,and
located the watch near a window.
5. I was then able to perform the Manual Receive, and the
Automatic Receive.

Since my two, inexpensive Atomic Clocks work perfectly, I do believe that the Titanium Case may interfere with reception. That must be why you have to put the watch around the Vinyl Pillow, since that separates the Titanium Watch Band from the Titanium Body of the Watch.

Since the Retailer was bewildered, I will now update him on my positive experiences.

The first watch, may have had an inoperative Receiver.

Hope that these experiences help some of you fellow sufferes out there. The problem was driving me nuts.

I live in the Baltimore area.

Good Luck

[email protected]

Posted on Jan 21, 2008


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I also have an OCW-M700 and found the instructions that you download from the casio website good and perhaps easier to follow than the booklet, still does need some patience and but worth it in the end because it is a great watch. The manual time/date setting can be done fairly easily once you are in 'Timekeeping mode' (page 4, bottom right). The applicable download is operation guide 4749. Good luck. Also, you probably dont want to know this but for others out there - they sell for around 600US$ in taiwan if you can find a shop that stocks the casio upper range, taipei airport normally has stock at duty free.

Posted on Jan 15, 2008

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