Question about Casio PRG-40T-7 Pathfinder

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Casio G-shock watch 2688 battery replacement

Can I get a document showing how to change the battery?  Where do the three springs go?  How does the band come off (normal screw direction? It's real tight)  Thanks, [email protected]

Posted by anbk on

  • anbk Jun 10, 2008

    Thanks for trying, but the manual says to let a store do it because of the water seal washer.  So the manual doesn't show.  I've had the watch apart to see how many batteries were there and one spring sprung.  Don't see any place appropriate for it.  

    Any other ideas?

  • sonetlumiere May 11, 2010

    Manual does not show how to get the "dam" silver plate off. have searched every where for this info but is must be part of the official secrets act



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Check the manual it should be covered there.

Use this page to download a copy of CASIO watch manuals in PDF format. To download a PDF file, enter the four-digit (or three-digit) module number marked on the back cover of your watch.

You will need a pdf reader on your pc, you will find all instructions in there.

If you don't have a pdf reader you can get one from

Posted on Jun 10, 2008

  • r2d2r2d2 Dec 03, 2010

    Areally lame answer. The manual says NOTHING about how to change the battery or spring placement. Any 3rd grader could find the casio website and pfd manual.

    You tube offers several great videos for this operation. Just enter "casio gshock battery" and you will find what you are looking for.

    I just changed my gshock battery with a genuine Panasonic ctl1616 battery I found on the internet with a google search for $12.95 including the little tweezers you will need.

    My watch needed a replacement at about 5 years. Its holding up great!!

    Good luck all.



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