What is the circular thing glued to the underside of casebacks?
Like Tree1Likes
  • 1 Post By Sedi

Thread: What is the circular thing glued to the underside of casebacks?

Results 1 to 10 of 10
  1. #1
    Member
    Join Date
    Dec 2010
    Location
    Southern California, USA
    Posts
    7,352

    What is the circular thing glued to the underside of casebacks?

    When you remove a caseback to change the battery, if you look at the bottom side of the caseback (the part that presses against the module), there is a circular thing that is glued, right on the spot where the battery would be touching the caseback. What is the point of it? What is it made of? What happens if it is not there? Just wondering.

  2. #2
    Member
    Join Date
    Jul 2009
    Posts
    338

    Re: What is the circular thing glued to the underside of casebacks?

    never looked inside one, but does it have anything to do with the negative contact of the battery?

  3. #3
    Member Sedi's Avatar
    Join Date
    May 2007
    Location
    Bamberg, Germany
    Posts
    13,980

    Re: What is the circular thing glued to the underside of casebacks?

    It's the piezo speaker for the alarm and anything else that beeps.

    cheers, Sedi
    got6ponies likes this.
    Cheers
    Sedi

  4. Remove Advertisements
    WatchUSeek.com
    Advertisements
     

  5. #4
    Member
    Join Date
    Dec 2010
    Location
    Southern California, USA
    Posts
    7,352

    Re: What is the circular thing glued to the underside of casebacks?

    Quote Originally Posted by Sedi View Post
    It's the piezo speaker for the alarm and anything else that beeps.

    cheers, Sedi
    thanks!

  6. #5
    Member 1of2's Avatar
    Join Date
    May 2011
    Posts
    429

    Re: What is the circular thing glued to the underside of casebacks?

    Quote Originally Posted by Sedi View Post
    It's the piezo speaker for the alarm and anything else that beeps.

    cheers, Sedi
    Incorrect, its actually a tracking device so that Casio can track all their customers habits, kind of like a tracking cookie only better.

  7. #6
    Member
    Join Date
    Jun 2011
    Location
    Raincouver, BC, Canada
    Posts
    3,679

    Re: What is the circular thing glued to the underside of casebacks?

    i thought it was there to keep the battery/board from touching the backcase, as to, when you are electrocuted, you might get shocked or get killed, but nothing will touch the watch, so it can move on living ???
    _________________
    Selfishness is not living as one wishes to live, it is asking others to live as one wishes to live.Oscar Wilde

  8. #7
    Member
    Join Date
    Dec 2010
    Location
    UK
    Posts
    877

    Re: What is the circular thing glued to the underside of casebacks?

    Yes, it's the piezo beeper. The caseback on Multiband G's (or at least some) have another piece attached, and connected via a spring to the module: I assume that's an aerial (antenna).
    Last edited by rogerlike; November 14th, 2011 at 02:12.

  9. #8
    Member BrendanSilent's Avatar
    Join Date
    Jan 2011
    Location
    South Carolina, USA
    Posts
    2,063

    Re: What is the circular thing glued to the underside of casebacks?

    weird, i always thought it was just a sticker of some sort that was put there during the manufacturing process as a way of marking, and there was no need to remove it later.

    another mystery solved!

  10. #9
    Member xevious's Avatar
    Join Date
    Feb 2008
    Location
    near Manhattan... Status: Changing course, hard about
    Posts
    6,103

    Re: What is the circular thing glued to the underside of casebacks?

    It actually hasn't been a mystery for all that long... we've had a few threads chatting about them across the years, mainly started from someone losing their beep tones. This happens on the modules with a spring sticking out, which makes contact with the piezo speaker. That spring can fall out and sometimes does when a battery is changed.

    What's interesting is that with the screw-back models, there isn't a spring. Instead, there's a metal prong bent away from the module that contacts it. And the speaker is usually positioned in such a way that it makes contact with the prong no matter what the orientation of the back.

    I just wish there was some kind of upgraded piezo speaker you could install, to increase the sound level.
    In rotation: Citizen Attesa ATV53-2834, Eco Drives | Omega Seamaster | CASIO: TW-7000, MRG-220, RevMan, G-2000D, DW-5700ML, GW-9100 | Seiko SKA-413, SBPG001

  11. #10
    Member
    Join Date
    Aug 2011
    Location
    Midwest, USA
    Posts
    2,331

    Re: What is the circular thing glued to the underside of casebacks?

    Actually, it's an insulator to protect the battery from short-circuiting itself. The spring is correlated to the alarm.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •