====== Ferdinand Berthoud Chronomètre FB 1R ======

{{wst>image_cr|Ferdinand Berthoud|Chronomètre FB 1R.6-1}}
{{wst>image_cr|Ferdinand Berthoud|Chronomètre FB 1R.6-1 back}}

The **Chronomètre FB 1R** is a wristwatch by [[Ferdinand Berthoud]].

Presented in [[2018]] at the [[SIHH]], the Chronomètre FB 1R pays tribute to the genius of watchmaker [[Berthoud, Ferdinand|Ferdinand Berthoud]]. Like the previous editions of the Chronomètre FB 1, its movement is equipped with horological complications inspired by the scientific instruments represented by Ferdinand Berthoud’s marine chronometers. The appearance of the Chronomètre Ferdinand Berthoud FB 1R.6-1 takes its cues from the Marine Chronometer No. 7, produced in [[1767]].

The amazingly unusual dial design shows a regulator-type display. 

<WRAP ud ud_mod>
**Reference:**
  * FB 1R.5 Patinated [[bronze]], nickel silver dial
  * FB 1R.6-1 [[Steel]]

**Movement:**
  * [[Manual winding]] [[manufacture movement]] [[FB-T.FC.R]], 21.600 A/h
  * [[Fusée and chain]] [[tourbillon]] ([[constant force]])
  * [[COSC]]-[[certified]] [[chronometer]]
  * 1,158 (including the chain with 790 parts)
  * 49 [[jewels]]
  * Power reserve 53 hours

**Case:**
  * Ultra-resistant carburised [[stainless steel]]
  * Ø 44 mm, H 13.95 mm
  * Domed [[sapphire crystal]] with [[anti-glare treatment]] on both sides
  * Screw-in caseback with [[sapphire crystal]]
  * Two transparent sapphire crystal portholes
  * [[Waterproof]] to 3 bar

**Dial:**
  * [[Regulator]] dial plate in black rhodium-plated nickel silver, satin-brushed by hand

**Functions:**
  * Hours at 2 h
  * Pointer-type minute display at 12 h
  * [[Central seconds]]
  * [[Power reserve]] at 10 h

**Bracelet:**
  * Alligator leather strap, hand-sewn
  * Titanium [[folding clasp]] or [[tang-type buckle]]

**Limitation:**
  * FB 1R.6-1: 20 pieces, numbered
</WRAP>

{{tag>Watch_models Watches_with_tourbillon Ferdinand_Berthoud_models}}