Ferdinand Berthoud gives the FB 3SPC.4-1 a black ceramised shell

The Ferdinand Berthoud Chronomètre FB 3SPC.4-1 places the collection’s exposed mechanics inside a matte black ceramised-titanium case. Measuring 42.3 mm by 9.43 mm, it adds the line’s first crown guard and a black fabric strap. A sapphire porthole at 9 o’clock provides a lateral view of the escapement, while water resistance is rated to 30 metres.

Hand-wound Calibre FB-SPC uses a cylindrical balance spring, 47 jewels and 230 components. It runs at 3 Hz, offers 72 hours of reserve and carries COSC chronometer certification. The nickel-silver movement combines eight finishing techniques, including hand bevelling, black polishing, circular finishing and satin work.