View Single Post
Old 10 March 2010, 04:38 PM   #63
wuzzzer
"TRF" Member
 
Join Date: Apr 2008
Location: USA
Posts: 384
Rolex has stated that their use of "Superlative Chronometer" refers to their watches being regulated in-house to +5/-1 seconds per day - tighter tolerances than the COSC standard.
wuzzzer is offline