Functions in depth

The monopusher chronograph features one single push-piece to start, stop and reset the chronograph functions. This system allows the chrono to be reset more rapidly as it is not necessary to change the button to be pushed. To make it easier and clearer to read, the hand of the small minute counter moves in jumps instead of continuously.

  • +

    One press on the «START»

    push-piece at 8 o’clock automatically activates the chronograph hands.

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    One press on the «STOP»

    push-piece at 8 o’clock stops the hands so that they indicate the time elapsed from the start.

  • +

    One press on the «RESET»

    pushpiece sets the chronograph hands back to zero. It is not possible to reset the chrono without stopping it first.

Functions P.2004



  • Hours, minutes, small seconds
  • GMT
  • Power Reserve Indicator
  • Seconds Reset
  • Single Button Chronograph

Technical specifications

  • Hand-wound mechanical
  • 13¾ lignes
  • 8.2 mm thick
  • 29 jewels
  • Glucydur® balance
  • 28,800 alternations/hour
  • KIF Parechoc® anti-shock device
  • Power reserve 8 days with linear indicator
  • Three barrels
  • Seconds reset device
  • Column wheel
  • 321 components
The column wheel

The column wheel

The Panerai Chronograph movements feature a column wheel system, a sophisticated mechanism that guarantees the highest standards in terms of technology, quality and reliability.
The column wheel takes its name from the presence of a series of “columns” positioned perpendicularly above the wheel. Its function is to control (activate/deactivate) the chronograph levers according to the impulses received by the chrono push-piece.
These columns guide the movement of the chronograph levers which press against a column or fall into an empty space. The column wheel therefore permits two or more levers to be engaged simultaneously, which operate the chronograph functions with a single push.
This device therefore allows greater precision in the operational sequences of the chronograph. The column wheel ensures smoother operation of the chronograph and very precise operation of the chronograph functions.
The column wheel is visible on the back of the watch through the sapphire crystal window.

The vertical clutch

The vertical clutch

This sophisticated system permits the simultaneous transmission of energy between the movement and the chronograph functions. The system is composed of three parts: the lower seconds wheel rotates constantly since it is connected to the seconds wheel of the movement; the chrono seconds wheel is positioned above the latter and a ange which permits the connection/ disconnection between these two wheels. When the chronograph is engaged, the ange comes down and places the lower seconds wheel in contact with the chrono seconds wheel which starts to turn (chrono on). Since the ange is a system without teeth, the vertical clutch prevents the second hand from jumping when the chronograph is engaged. In chronographs with a lateral clutch, the engaging movement causes a shift which may result in the chronograph hand making a larger jump than normal. Furthermore the vertical clutch reduces the effects that the engagement has on the balance amplitude and the chronograph can continue working for longer without negative effects on the accuracy of the watch.


Officine Panerai
Marketing e Comunicazione S.r.l.
Viale Monza, 259
20126 Milan - Italia
Tel: +39 02 363138
Fax: +39 02 36313297

R.E.A DI MILANO N°1532640
R.I. DI MILANO / P.IVA/ C.F. 12155270155


Angelo Bonati

Design & development



Jean-Bernard Aegerter - Milano - Italia
Claudio Baini - Segrate (MI) - Italia
Michel Bechet - Neuilly sur Seine - Francia
Francesco Bedini - Firenze - Italia
Christopher Broadbent - Milano - Italia
Sandro Campardo - Neuchâtel – Svizzera
Guido Cantini – Milano - Italia
Toni Carta - Rapallo - Italia
Armen Casnati - Milano - Italia
Ho Yan Lee - Hong Kong
Aldo Martinelli - Milano - Italia
Franco Pace - Trieste - Italia
Lionel Pasquon – Milano - Italia
Lloyd Images - Lymington, Hampshire - Uk
Marco Pirovano - Milano - Italia
Francesco Rastrelli – Sorrento (NA) - Italia
Cory Silken - Newport - Usa
James Taylor – San Casciano Val di Pesa (FI) – Italia
Giuseppe Toja - Milano – Italia

A special thank you to publisher Flammarion for its kind permission to use pictures contained in the book 'Panerai' by Giampiero Negretti - Simon de Burton.

Officine Panerai reserves the right to amend at any time the information concerning models and their characteristics, in addition to any other information present in this site.
The registered trademarks Super-LumiNova®, Glucydur®, Incabloc®, Plexiglas ® and KIF Parechoc® are not the property of Officine Panerai.

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