Extending the Chronometer Certification to all Serica Watches means that every movement and every watch benefits from the highest quality controls and reaches a staple in mechanical precision. One that has been a reference for over 50 years. #cosc #chronometer #mechanicalchronometer #certification #cosccertification #precision #Serica6190 #serica #sericawatches #watchmaking #sportswatches #goingtheextramile #6190 #mechanicalwatches #refinedsimplicity #toughwithcharm #swissmade #extremeversatility #fieldwatch