How to replace the battery in an f300?

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I have a f300 Constellation bought from a forum member a while back that now requires a new battery.

I have a Renata 344 (which I believe is the correct battery) but I can't find instructions on how to open the watch and fit it.

Can anyone give me any guidance please?

Thanks in advance!
 
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Not meaning to sound like a dick (surprising, I know) but, if you don't know how to do it, I would take it to a watchmaker to avoid damage.
 
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Not at all - if there's even a remote chance of damage to the watch I think that's good advice!
 
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Same advice from me. I have seen a lot of f300 with damaged index fingers and wheels due to screw drivers sliding off the screw head.
 
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Apologies for reviving this thread. I need a new battery again and don't recall where I had it done in 2019... doh! 😬

Would be grateful for any recommendations in Central London please.

Thanks in advance!
 
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Apologies for reviving this thread. I need a new battery again and don't recall where I had it done in 2019... doh! 😬

Would be grateful for any recommendations in Central London please.

Thanks in advance!
The Omega Boutique?
 
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The Omega Boutique?

Thanks efauser. I'd kind of assumed they would charge lolprice for a battery change but I'm not really basing that on anything. I'll drop them a line.