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Longines VHP accuracy

40132 Views 122 Replies 14 Participants Last post by  ronalddheld
Fellow watch nerds!

I have a Longines Conquest VHP watch that runs too fast. Faster than the 10 seconds per year that Longines advertises with. My watch gains 5 seconds per month. Almost a minute per year.
I have been keeping an eye on it, for a few months now, and it is very consistent at gaining one second every 6.5 days.

It might be due for a new battery since it is almost 8 years old. The second sweep still moves every second though.

It has been quite good so far, although I have not paid it as much attention before. I think it used to be one or two seconds out per month.

Anyone else has experiences with a VHP? I read that the rate can be adjusted when serviced. Is that a good idea? Who could do that?

It is a 1999 Conquest Perpetual Calendar Calibre 546. It has 'L1.632.4' inscribed on the back. Not too sure what that stands for.

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That would make for how many of us throughout the world?
Good jobs at having the coordination to do that adjustment.
I'm in North West UK and would like to find someone reliable for a strip/clean/relube for my VHP. Does anyone have a recommendation. If not in the NW, I'm prepared to post it.
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