Slowing Down Sinn U1

Thread: Slowing Down Sinn U1

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  1. #1
    Member suburude's Avatar
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    Slowing Down Sinn U1

    Hi all! My U1 is slowing down ! Not much but it was running about 5 mins fast since new and just the other day I noticed it was slower not faster in time? Checked it and its about 3 mins slow per day .
    Still very good in my oppinion! But its getting slower. Its about 4 years old! I am a beleiver as this is the best dive watch made bar none!
    Heres my questions?
    Does Sinn have a service dealer in the states yet? Where? and how to get in touch?
    Can I bring it to a certified automatic service person for service? Has anyone done this?
    Any info appreciated!! Thanks!! :thanks Jim

  2. #2
    Moderator Public Forum Eric L.'s Avatar
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    Re: Slowing Down Sinn U1

    The U1 uses a normal ETA 2824-2 so any watchmaker can work on it, not any special Sinn person.

    5 minutes fast per day or 3 minutes slow per day is wildly inaccurate. It should be no more than 20s fast per day.
    Lots of dive watches.

  3. #3
    Member suburude's Avatar
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    Re: Slowing Down Sinn U1

    3sec slow not minutes! Sorry for the mix up! Jim

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  5. #4
    Administrator CMSgt Bo's Avatar
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    Re: Slowing Down Sinn U1

    It's still within COSC standards, I'd leave it alone for now. I don't have mine looked at until they go beyond -15 secs for COSC and -30 secs for non-COSC per day.

  6. #5
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    Cool Re: Slowing Down Sinn U1

    My U1 is at RGM (in Pennsylvania) right now for regulation. It lost 3 seconds a day when new, is losing 8-10 seconds a day (it's about 4 months old) now.
    Personally, I prefer my watches to gain a second or two each day.

    I'd send your U1 in. Keep in mind, however, with your U1 being 4 years old, RGM will probably want to service it, as well as regulate it.
    "Courage does not always roar. Sometimes, it is the quiet voice at the end of the day saying, 'I will try again tomorrow'." (attributed to Mary Anne Radmacher-Hershey)

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