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You give too much credit to the average owner and to first-hand experience...

 

How do you qualify first-hand experience?  Average owners can't determine accuracy of a watch just by gut feeling alone and not even by comparing to a reference time sporadically.  I thought my new COSC rated watch was very accurate.  Then I started to think it wasn't accurate.  Then I started keeping logs of it on a spreadsheet.  Some days the watch was accurate, some days the watch wasn't and gained as much as 19 seconds since the last measurement.  I don't think an "average" owner can make an accuracy determination without keeping a spreadsheet - and I doubt that hardly any of them do.  


DateTimeWatchFast/Slow DifferenceOn WinderCrown Pos.Comments
3-Oct-249:30AMChopard00NoUpWatch Stopped, Reset Time to +0/sec
3-Oct-2411:06AMChopard00900CW/900CCWScatola Rotor 1Watch put on winder for 48 hours; watch is fully wound
5-Oct-2411:13AMChopard66900CW/900CCWScatola Rotor 1Watch gained about 3 seconds a day
5-Oct-2411:15AMChopard60NoCrown DownWatch being put crown down to see if watch runs fast crown down
5-Oct-245:00PMChopard5-1NoWrist
5-Oct-2410:53PMChopard61900CW/900CCWScatola Rotor 1
6-Oct-248:21AMChopard71900CW/900CCW
7-Oct-241:22PMChopard125NoWristWatch gained a lot in short time.  Wearing Chopard watch on wrist.
7-Oct-247:28PMChopard1201140 CWScatola SL Winder
8-Oct-249:45AMChoaprd142NoCrown UpWatch was in winder about 14 hours and now resting on nightstand crown up.
9-Oct-248:13AMChopard206NoWristAfter resting 22 hours crown up, watch has gained another 6 seconds.  Wearing watch today.
9-Oct-249:09PMChopardCrown UpWore watch for 13 hours today.  Leaving watch crown up.
10-Oct-241:38PMChopard2221140CWScatola SL WinderPut watch on winder.  Watch has gained 2 seconds
10-Oct-248:05PMChopard2861140CWScatola SL WinderWatch has gained another 2 seconds.  Watch is still on the winder.
11-Oct-249:54AMChopard335NoWristWatch continues to gain a lot of time in a short period.  In 49 hours it gained 13 seconds!
11-Oct-249:45PMChoaprd363NoCrown DownWore the watch almost 12 hours today.  Resized bracelet. Putting watch crown down.  
12-Oct-2410:14PMChopard459NoCrown UpWas on the wrist today from 11AM till 10:14PM.  
13-Oct-247:24PMChopard6419NoCrown UpWas on the wrist today from 11AM till 7:24PM. 
14-Oct-249:05AMChopard7511NoWristThis watch is gaining time rapidly!  Tested for magnetism with compass.  No indication of magnetism.  
14-Oct-245:49PMChopard8712NoCrown UpThis watch is gaining tremendous time.
15-Oct-248:26AMChopardNoCrown UpWatch Stopped, indicating 7:47AM, Reset Time to +0/sec
15-Oct-249:06AMChopard00NoScatola Rotor 1Watch reset to +0 seconds.  
15-Oct-245:11PMChoaprd00900CW/900CCWScatola Rotor 1Watch on winder hasn't gained nor lost any time at all.
16-Oct-249:20AMChopardNoWristWore watch.
16-Oct-247:35PMChopard11900CW/900CCWWore watch for 10 hours today.  Putting onto winder.  Strange that it's running perfectly normally.
19-Oct-2411:14AMChopard0-1NoWas in the winder for two days.  
20-Oct-2411:35AMChopard55NoWristWearing watch today.  Watch in various positions.
20-Oct-2410:07PMChopard72NoCrown UpWore watch today for 11 hours.  Gained 2 seconds.  Placing crown up.
21-Oct-2412:32PMChopard158NoWristWatch has gained another 8 seconds in crown up position.

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