Portuguese Perpetual Calender Time Accuracy

Hi,

I am interested in the PPC. Can I know for current owners, what is the accuracy of the watch? The spec is +0/10sec per day?

Thanks!

I'm not sure where you got your spec for the PPC. I am certain it's not 0 to +10. I believe it's -4 to +6. My PPC runs about +3 sec per day for over three years now. More importantly, it is consistent, which to me is more important than the + / - deviation.

I expect the experts will correct me, if I have the spec wrong.

Great idea on the PPC. I have had my 5022 Portuguese Perpetual now for over 4 years, and my ref 5021 for 3+ years - they both are very consistent. It's been over 3 years since I have cared to track the deviation. These watches are adjusted and monitored before leaving the factory to a tolerance of 0+5 seconds (never slow). My 5022 was +5 secs per day (3 years ago when I last tracked) and compared to only +3 for the slower beat 5021 (which was lucky surprise to me).

Given the beauty and complicated engineering - I find myself looking at these watches quite often, but failing to note what time it is....

Yes, I know, and it gives you an excuse to look again, and then yet again just for the fun of it.

Kind regards,
Paul, on post 2400: Isobars might like this

I think I have come to the conclusion that pinpoint accuracy with respect to time is irrelevant as long as you are within about 4 seconds a day. I always make adjustments when the end of a month requires a date change, but in this case you would not have that ability since the watch is perpetual. So it depends on your own tolerance for deviation from actual time.

By the way, I had thought IWC's specifications were 0 to +8 seconds/day, and never slow. But also I wouldn't lose sleep if my watch was -1 or +9 seconds/day. It really has no material affect on life, and I would ask for fine-tuning when the watch had it's next regular service.

I agree with MF - as long as it "ticks" well and is not loosing time - I would not do anything until the first / next regular service.

Mine was purchased on December 2009 and was +12 seconds fast per day. I recently had to send it to IWC for an issue. They regulated the movement and it now runs +2 seconds per day - just right!