Is the case back screw or snap on H461-5030? - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 03-15-2019, 10:38 AM   #1 (permalink)
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Default Is the case back screw or snap on H461-5030?

Hi everyone! I'm glad I found this forum and have just joined. May I ask for some advice?

Could anyone please tell me how the case back of my H461-5030 can be removed? I've scoured this site and downloaded a number of PDFs, but I've been unable to establish whether the back of this Seiko is a screw or snap type. And if it's screw (as I suspect), is there a specific tool for removing and re-fitting it, since the back has only one small notch? The scratches suggest that watch shops/jewellers who have replaced the battery in the past have not used the correct tool

I haven't used this watch for at least 15 years, so rather than pay a watch shop to replace the battery and potentially discover that the watch no longer works, I'd like to open it and replace the battery myself, if at all possible.

With thanks in advance!
Si
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File Type: jpg Seiko_H461-5030_b.jpg (186.1 KB, 11 views)
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Old 03-15-2019, 11:37 AM   #2 (permalink)
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It's a snap back case. Look closely around the mating surfaces and you will see a small relief where you can insert a sharp tool to open it .

The notch on the case back aligns with the dimple in the case so the piezzo disc for the alarm is in the correct orientation.

You may have to remove one side or the other of the bracelet to get a straight shot at the relief.
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Old 03-15-2019, 11:56 AM   #3 (permalink)
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Wow Mike that is the best tech support post one could ever ask for !
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Old 03-15-2019, 01:30 PM   #4 (permalink)
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Thank you so much mmounce, you're a star!

I wore this watch for many years (a long time ago) and always took it to watch shops to have the battery replaced as, despite checking the back many times, I never saw the relief adjacent to the lower bracelet fixing. In the past I'd noticed the dimple in the case, but on my assumption that the back screwed in I had always thought that when the notch and dimple were aligned then the back should not be screwed in any further.

Now I can buy the appropriate battery and see if the watch still works...

Thanks again!
Si

P.S. Evidently part of the gasket has been missing for a long time, it didn't just fall out!
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Old 03-15-2019, 01:33 PM   #5 (permalink)
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Quote:
Originally Posted by Grammarofdesign View Post
Wow Mike that is the best tech support post one could ever ask for !
Agreed!
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Old 03-15-2019, 02:05 PM   #6 (permalink)
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I'm glad it worked out. The H461 movement is about bullet proof. I believe it takes a 392 battery.
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Old 03-15-2019, 02:16 PM   #7 (permalink)
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Quote:
Originally Posted by mmounce View Post
I'm glad it worked out. The H461 movement is about bullet proof. I believe it takes a 392 battery.
Glad to hear it's bullet proof! My James Bond G757 died a long time ago, as it used to drain a new battery within weeks. Though I understand the G757 was prone to problems anyway. I also have a 5Y39-5060 that's still going strong.

The H461-5030 takes a 361/SR721W. Do you know if there's much difference between battery brands? Renata seem to cost a bit more, but I guess that doesn't necessarily mean they're better?

Thanks!
Si
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Old 03-15-2019, 02:32 PM   #8 (permalink)
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You may want to check that battery number again. I like Maxell's.
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Last edited by mmounce; 03-15-2019 at 02:34 PM.
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Old 03-15-2019, 03:16 PM   #9 (permalink)
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Quote:
Originally Posted by mmounce View Post
You may want to check that battery number again. I like Maxell's.
You're right - I shouldn't assume that the last watch shop that fitted a battery in this watch actually used the right one! I've ordered a Renata, though only because the spec says its capacity is a bit higher than the Maxell.

Thanks again for sharing your wisdom, very much appreciated!
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