Name: Chronomètre FB 1RES.4
Brand: Ferdinand Berthoud
SKU: chronometre-fb-1res-4

A CUSTOMISABLE VERSION OF THE REMONTOIRE REVEALING ITS INTRICACIES

In 2020, Chronométrie Ferdinand Berthoud unveiled its second collection, the Chronomètre FB 2RE. This timepiece marked a real turning point for the Maison: the first round case, the first display with three central hands; and above all the first movement with a double regulation system combining fusee-and-chain transmission with a one-second “remontoir d’égalité”. This calibre, which has won awards for its precision timekeeping performance, now reveals more of how it operates through the customisable bridges and mainplate of the Chronomètre FB RES.

The FB 1RES.4 equipped with an octagonal case in ceramic-coated titanium and a sand-blasted anthracite dial is one of the variations offered by the manufacture.

CUSTOMIZE MY WATCH

features

01

At the heart of this timepiece beats the Calibre FB-RES.FC, regulated by fusee-and-chain transmission and a one-second remontoire. The purpose of this full-fledged chronometric complication is to even out the energy coming from the barrel and transmitted to the escapement. The device relies on a spring positioned between the two organs. It temporarily stores a small amount of energy, which is then delivered to the balance. The charge/discharge frequency of this buffer energy is very short: one second.

02

The construction with three bridges converging towards the dial centre is directly inspired by a skeletonised table clock made by Ferdinand Berthoud circa 1775. The similarity does not end there, as that clock displaying the hours, minutes, seconds, age of the Moon, calendar and zodiac signs was also equipped with a “remontoir d’égalité”.

03

Each wheel, bridge and screw is entirely hand-decorated. An extraordinary level of manual finishing has been applied in order to reveal the beauty of each component. Placed end to end, all the angles of the wheels and their bridges, as well as those revealed at the heart of the 9 o'clock power-reserve display, represent more than two linear metres filed and polished by hand.

Specifications

Case

Material : Case in ceramic-coated titanium
Case Type : Octagonal case fitted with two glare-proofed sapphire crystal portholes at 2 and 11 o’clock
Diameter : 44 mm
Thickness : 14,26 mm
Water resistance : 30 m
Glass : Domed sapphire crystal glareproofed on both sides
Case-back : Fitted with a “chevee” sapphire crystal pane glare-proofed on both sides
Crown type : Dynamometric in ceramised titanium with black ceramic medallion

Movement

Calibre : FB-RES.FC
Type Of Movement : Constant force with fusee-and-chain transmission and a one-second remontoire device
Type Of Winding : Mechanical hand-wound
Diameter : 37.30 mm
Тhickness : 9,37 mm
Lines : 16 ½
Number of jewels : 58
Frequency : 18,000 vph (2,5Hz)
Power reserve : 50 hours
Number of components : 1200
Chain length : 285
Certification : Chronometer-certified by the COSC
Limited edition of 38 movements

Dial and Hands

Dial : Anthracite sand-blasted openworked nickle silver plate
Anthracite circular satin-brushed inner bezel ring
Gilded and skeletonised dagger-shaped hours and minutes hands
Brass central sweep-seconds hand with blue CVD treatment
Arrow-shaped power reserve hand in 18-carat gold with blue CVD treatment

Functions and Display

Hours and minutes, deadbeat seconds, power reserve, time-setting with stop-seconds device on the balance

Strap and Buckle

Strap : Alligator leather
Buckle : Length-adjustable double-blade folding clasp or pin buckle

Chronomètre FB 1RES.4