Timekeeping/Regulation

How can I get my watch demagnetised?

The Bremont Boutiques are equipped with demagnetising equipment. If you need your watch to be demagnetized then this is a straightforward process that can be undertaken while you wait. Alternatively, please take your watch to an Authorised Dealer or send it back to the Henley workshop where it will undergo a full assessment.

How do I get my COSC certificate?

When you purchase your watch from a Bremont Boutique or Authorised Dealer you will be given a validated COSC & Warranty Registration Card to complete and return. Once this has been received and processed by Bremont HQ, the relevant COSC certificate will be sent to you by recorded delivery.

What accuracy can I expect from my Bremont?

When a Bremont timepiece leaves the workshop, it will have been regulated to within ISO 3159 (Timekeeping Instruments – Wrist chronometers with spring balance oscillator) certification parameters of -4 to +6 seconds per day. These tolerances are the industry standard.

What is COSC?

Controle Officiel des Chronometres is an independent non-profit organisation established in 1973 to define the criteria that must be met for a watch movement to be granted a chronometer certificate. Chronofiable certification focuses on durability and reliability. The testing takes place over 16 days, with the movement being tested in 5 different positions at a range of temperatures; an accuracy of -4 to +6 seconds per day must be achieved for certification of the movement. The COSC certificate belongs to the individual movement tested.

What is magnetisation?

As your mechanical watch contains metal it may have become magnetised through encountering a magnetic field, affecting the accuracy of its timekeeping. Magnetic fields can emanate from many everyday objects including computer hard drives, fridge doors, magnetic iPad cases, speakers, mobile phones on charge, induction stoves, magnetic catches on handbags, medical equipment, security scanners etc. They do not cause permanent damage.

Which Bremont watches are COSC certified?

The vast majority of Bremont watch movements are COSC certified with the exception of these pieces: Jaguar MKI, Codebreaker, Victory, Wright Flyer and 10th Anniversary gentleman’s watch; these watches are still regulated to the ISO timing parameters.