Make sure the crown is tight shut, WASH the watch in a mild solution of tepid water & washing-up liquid and dry with a Selvyt cloth.

Dec 25, 2022,10:30 AM
 

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oxidation on 5711 1R?

 
 By: Peter : December 25th, 2022-08:47
check the spots on the bezel at 12:00 and at 4:00. is this oxidation? the watch is a 18 months old. ...