Longines automatic hydroconquest accuracy
Discussion
If its running -10 s/day and the spec sheets says it should be running better than that, then you should have no problems getting them to regulate the movement so that it does.
You'll be without the watch for a couple of weeks or so, but at least it should be performing much better when receive it back.
On option, if not already accounted for, is to make sure the watch is wound fully each night, and the deviation noted when you take it off - say against www.time.is
Position the watch crown up, down, face up, down etc and then see what the deviation is the next morning.
With any luck, one or more of the positions will cause it to speed up, which means you could deal with the present deviation by positioning it a specific way to reduce/negate the overall deviation.
You'll be without the watch for a couple of weeks or so, but at least it should be performing much better when receive it back.
On option, if not already accounted for, is to make sure the watch is wound fully each night, and the deviation noted when you take it off - say against www.time.is
Position the watch crown up, down, face up, down etc and then see what the deviation is the next morning.
With any luck, one or more of the positions will cause it to speed up, which means you could deal with the present deviation by positioning it a specific way to reduce/negate the overall deviation.
With wearing it overnight, you could be lying in a position that causes the movement to run slow.
By removing it each night, after checking against the atomic clock time, and positioning it differently each night, then checking the time again in the morning, you'll soon see which position(s) cause the watch to lose more time, and which speed it up to make it deviate less overall.
Doing this, you'll be able to manage the deviation that occurs during the day.
Of course, you can still avail of having Longines' Service Centre regulate the movement, and re-pressure tested, such that it deviates less in each position.
The winding aspect is to reduce Isochronal errors, which is where the movement runs slightly quicker as the power reserve reduces – you'd only need to do that, if you thought you weren't moving enough during the day to have it fully wound, before taking it off.
An easy check is to take the watch off, leaving it face up, and noting the time displayed – if the watch stops at less than 36 hours later, then it'll need a bit of manual winding, otherwise it's fine if you don't.
By removing it each night, after checking against the atomic clock time, and positioning it differently each night, then checking the time again in the morning, you'll soon see which position(s) cause the watch to lose more time, and which speed it up to make it deviate less overall.
Doing this, you'll be able to manage the deviation that occurs during the day.
Of course, you can still avail of having Longines' Service Centre regulate the movement, and re-pressure tested, such that it deviates less in each position.
The winding aspect is to reduce Isochronal errors, which is where the movement runs slightly quicker as the power reserve reduces – you'd only need to do that, if you thought you weren't moving enough during the day to have it fully wound, before taking it off.
An easy check is to take the watch off, leaving it face up, and noting the time displayed – if the watch stops at less than 36 hours later, then it'll need a bit of manual winding, otherwise it's fine if you don't.
Kaj91 said:
littleredrooster said:
Mine is spectacularly accurate when I put it crown-down overnight; within 10secs per week.
Is ten seconds per week considered spectacularly accurate? Mine is losing 1.5 seconds per week and I am disappointed.Craigybaby69 said:
Face up 3 secs lost
If you're losing 10 seconds a day on the wrist, and with -5, -8, and -3 so far, then unless face down and/or 12 up results in a massive +ve swing, I'd say it's already pretty clear that the movement isn't performing to spec.Make the call to Longines CS and tell them of the situation – they'll advise on how long it'll take to regulate the watch and return it.
Watch received back today so they had it approx 4-5 weeks and I was on holiday last week and told them not to send it then even if it was ready, so they managed to follow that instruction. No new marks or scratches either so hopefully, if it's keeping better time I'll be able to report a favourable after sales service.
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