Re: fiabilité?
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écrit par bertrand le 27 novembre 2004 14:03:53:
en réponse à: Re: fiabilité? écrit par j-L le 27 novembre 2004 13:20:01:
Pas beaucoup d'infos sur ce calibre car exclusivement utilisé par Breguet.
Tu peux peut-être poser la question sur le forum Breguet de TZ.Breguet and the world's smallest automatic chronograph
During Basel 1998, Breguet presented its Ladies' Marine Chronograph equipped with a Nouvelle Lémania 550 automatic movement. This caliber, with date indicator, is the smallest chronograph movement in existence. Its total diameter is 23.9mm and its fitting diameter is 23.2mm, with a thickness of 6mm.
The caliber 10.5''' offers a very exceptional dimension-performance ratio. Vibrating at 21,600 per hour, it has a working reserve of 45 hours.
Small seconds are shown at 6 o'clock. Chronographic functions include the seconds counter in the center, minutes at 3 o'clock and hours at 9 o'clock. They are operated by a column wheel controlled by a pushbutton located at 2 o'clock.
The column wheel operates the chronograph mechanism by coordinating the execution of the three measures of time: start, stop and start from zero. The zero start is controlled by a pushbutton at 4 o'clock. Additional functions can be added such as a rattrapante (flyback) function.
The exemplary finishing of this movement can be seen in the circular grain design of the wheels as well as the Côtes de Genève pattern.
The Ladies' Marine Chronograph features an 18K gold case as well as a silvered hand-guilloché gold dial and water-resistance to 50 meters. With the contemporary woman in mind, the new model combines a classic design, exceptional mechanical performance and sports functions.
LADIES' MARINE CHRONOGRAPHby Breguet
Equipped with the world's smallest automatic chronograph caliber, this 18K yellow gold ladies' watch features a silvered hand-guilloché gold dial, numbered Breguet.
The world's smallest automatic chronograph caliber from Breguet features a column wheel construction, 10.5 lines, 38 jewels, guilloché oscillating weight, in-line pallet, escapement and monometallic
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