Chronomètre Bleu
Chronomètre Souverain
Chronomètre Souverain Havana
Centigraphe Souverain
Chronomètre à Résonance
Chronomètre Optimum
Tourbillon Souverain
Répétition Souveraine
Sonnerie Souveraine
Souveraine Collection

Result of technical watchmaking challenges
thrusts beyond the limits.

Chronomètre Optimum Calibre 1510

White Gold and Silver dial
Blued Steel hands
Platinum case
Finishing
White Gold and Silver dial
Blued Steel hands
Platinum case
Calibre 1510
Technical Specifications
Mouvement :

    Calibre 1510
    Manual winding / 27 turns of crown
    18K rose Gold

Dimensions :
  • Overall diameter : 34.00 mm
  • Casing-up diameter : 33.60 mm
  • Height : 3.75 mm
  • Height of winding system : 2.395 mm
  • Diameter of stem thread : S1.20mm
Balance :

    Chronometric balance with inertia weight
    Hair spring with Phillips curve
    Mobile stud holder
    Free sprung
    Pinned GE stud

Frequency :

    21,600 Alt/h (3Hz)

Inertia :

    10.10 mg/cm2

Angle of lift :

    58°

Amplitude :

    0h dial up: > 260°
    24h dial up: > 280°

Characteristics :

    1 second remontoire at 11h, very light in Titanium and balanced
    Natural dead beat second on the back of the movement
    High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
    2 mainspring barrels in parallel
    2 position crown
    Time adjustment in position 2

Indications :

    Off centre hours and minutes at 3h00
    Small second at 9h00
    Power reserve at 6h00
    Large dead beat second on the back

Power reserve :

    70 hours

Finishes :

    Circular graining on baseplate
    Geneva waves on bridges
    Polished screw heads with chamfered slots
    Pegs with polished rounded ends

Number of parts :

    Movement without dial : 240
    Cased up with strap : 264
    Jewels: 44


At the heart of the movement
Brevet - EP 11405210.3 / EP 1 528 443 A1 / EP 1 760 544 A1
Technical description

(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire

---

The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.

- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.

- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.

- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).

- The balance with a spiral with Phillips curve guarantees better equilibrium.

18K red Gold and Silver dial
Blued Steel hands
18K red Gold case
Calibre 1510
Technical Specifications
Mouvement :

    Calibre 1510
    Manual winding / 27 turns of crown
    18K rose Gold

Dimensions :
  • Overall diameter : 34.00 mm
  • Casing-up diameter : 33.60 mm
  • Height : 3.75 mm
  • Height of winding system : 2.395 mm
  • Diameter of stem thread : S1.20mm
Balance :

    Chronometric balance with inertia weight
    Hair spring with Phillips curve
    Mobile stud holder
    Free sprung
    Pinned GE stud

Frequency :

    21,600 Alt/h (3Hz)

Inertia :

    10.10 mg/cm2

Angle of lift :

    58°

Amplitude :

    0h dial up: > 260°
    24h dial up: > 280°

Characteristics :

    1 second remontoire at 11h, very light in Titanium and balanced
    Natural dead beat second on the back of the movement
    High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
    2 mainspring barrels in parallel
    2 position crown
    Time adjustment in position 2

Indications :

    Off centre hours and minutes at 3h00
    Small second at 9h00
    Power reserve at 6h00
    Large dead beat second on the back

Power reserve :

    70 hours

Finishes :

    Circular graining on baseplate
    Geneva waves on bridges
    Polished screw heads with chamfered slots
    Pegs with polished rounded ends

Number of parts :

    Movement without dial : 240
    Cased up with strap : 264
    Jewels: 44


At the heart of the movement
Brevet - EP 11405210.3 / EP 1 528 443 A1 / EP 1 760 544 A1
Technical description

(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire

---

The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.

- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.

- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.

- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).

- The balance with a spiral with Phillips curve guarantees better equilibrium.

Other views
Other views
About
Combining rich knowledge of the history of time with modern technologies and the example set by the great masters, the Chronomètre Optimum most certainly joins the great iconic timepieces of F.P.Journe Haute Horology, in an ongoing quest for precision, innovation and excellence.

The Chronomètre Optimum encompasses a majority of exceptional components brought together for the first time in one watch: two barrels in parallel, the constant-force remontoire, the new EBHP revolutionary escapement, and the natural dead beat second. The extraordinary technical expertise put into the watch, contributes to its fundamental quality, that of giving the time... with almost complete precision.

The aesthetics of the hours, minutes and small seconds displays and of the 70-hour power reserve are in perfect harmony with the visible wheel of the constant-force remontoir on the face of the dial. The back of the 18K rose Gold movement reveals, through the sapphire back, a surprising natural dead beat second defined by a seconds circle screwed onto the movement's bridges.
Technical Specifications
Mouvement :

    Calibre 1510
    Manual winding / 27 turns of crown
    18K rose Gold

Dimensions :
  • Overall diameter : 34.00 mm
  • Casing-up diameter : 33.60 mm
  • Height : 3.75 mm
  • Height of winding system : 2.395 mm
  • Diameter of stem thread : S1.20mm
Balance :

    Chronometric balance with inertia weight
    Hair spring with Phillips curve
    Mobile stud holder
    Free sprung
    Pinned GE stud

Frequency :

    21,600 Alt/h (3Hz)

Inertia :

    10.10 mg/cm2

Angle of lift :

    58°

Amplitude :

    0h dial up: > 260°
    24h dial up: > 280°

Characteristics :

    1 second remontoire at 11h, very light in Titanium and balanced
    Natural dead beat second on the back of the movement
    High performance Bi-axial escapement with arbor and wheels in Titanium, functioning without oil, (inspired by that of A.L. Breguet created in the XVIII Century)
    2 mainspring barrels in parallel
    2 position crown
    Time adjustment in position 2

Indications :

    Off centre hours and minutes at 3h00
    Small second at 9h00
    Power reserve at 6h00
    Large dead beat second on the back

Power reserve :

    70 hours

Finishes :

    Circular graining on baseplate
    Geneva waves on bridges
    Polished screw heads with chamfered slots
    Pegs with polished rounded ends

Number of parts :

    Movement without dial : 240
    Cased up with strap : 264
    Jewels: 44


At the heart of the movement
Brevet - EP 11405210.3 / EP 1 528 443 A1 / EP 1 760 544 A1
Technical description

(1) High Performance Bi-axial Escapement
(2) Double mainspring barrels in parallel
(3) Natural dead beat second in the back
(4) Constant force remontoire

---

The Chronomètre Optimum embodies the culmination of F.P. Journe chronometric research for a wristwatch.

- The double barrel with its two springs ensures the stability of the driving force of this emblematic movement made of 18K rose Gold, a specificity of the brand.

- The constant-force remontoire (patent EP1528443.A1) balances the driving force applied to the escapement to make it constant. By adding an extra gear representing an independent system wound in short spurts by the mainspring, the escapement ensures the balance's isochronism. This remontoire, made of titanium for the first time, maintains its balance in different positions, for greater efficiency.

- The EBHP High-Performance Bi-axial Escapement has also been patented (patent EP11405210.3). This two-wheel direct impulse escapement functions without oil and is the only direct impulse escapement to start up on its own. But not only does it function without lubricant, it also has far greater output than the majority of escapements: 50 hours without loss of amplitude. Many dual-wheel escapements have been created in the past, the most efficient being the "natural" escapement invented by A-L. Breguet (†1823).

- The balance with a spiral with Phillips curve guarantees better equilibrium.