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G'ed · 15 March 2018, 06:16 PM

tighter spec than COSC with -2/+2. For my past watches with 31XX generation movement, timekeeping over certain days deviate average of 0-2 seconds which is superb compared to rest of the brand but daily deviation around 3-4 seconds sometimes depending on rest position and power reserve.

The newer movement (at least for the Sky D), is consistently 0 Sec deviation EVERY day for past 2 months, regardless of resting position. What sorcery is this??

15 March 2018, 06:16 PM	#1
G'ed "TRF" Member Join Date: May 2015 Location: RolexHQ boardroom Posts: 1,232	Rolex ain’t kidding when they claim... tighter spec than COSC with -2/+2. For my past watches with 31XX generation movement, timekeeping over certain days deviate average of 0-2 seconds which is superb compared to rest of the brand but daily deviation around 3-4 seconds sometimes depending on rest position and power reserve. The newer movement (at least for the Sky D), is consistently 0 Sec deviation EVERY day for past 2 months, regardless of resting position. What sorcery is this??

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