Bulgari Grande Sonnerie Quantieme Perpetuel - Interwatches.com News

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Wednesday 11 January, 2012 - 12:00 PM EST

Bulgari Grande Sonnerie Quantieme Perpetuel

The new perpetual calendar watch from Bulgari

Bulgari has just released a new Grand Complication model, a new addition to the Daniel Roth Collection, the  Bulgari Grande Sonnerie Perpetual Calendar feauring full calendar indications until the year 2100.

The movement of this complicated timepiece is composed of 923 parts, taking a whole year of a master-watchmaker to create it. This exceptional creation is an artistic masterpiece which, according to the most discerning connoisseurs of fine watchmaking, has already earned its place within the selective circle of the 10 most complicated watches ever presented. 

The new model presented by Bulgari this year goes a step further and pushes the boundaries of horological complexity by adding a perpetual calendar to the audible musical indications. In the case of the Grande Sonnerie Perpetual Calendar the process leading to its birth stretches over at least a year from the moment the watchmaker receives the rough movement parts.

The Bulgari Grande Sonnerie Perpetual Calendar is therefore equipped with two self-winding barrels: one is dedicated to the usual timekeeping functions of the watch, and the other exclusively serves the striking mechanism and guarantees a full 24-hour power reserve in Grande Sonnerie mode (28 hours in Petite Sonnerie mode, which means the mechanism does not repeat the hours when it strikes the quarters).

The sophisticated Perpetual Calendar developed by the Manufacture Bulgari will operate accurately without any need for adjustment until the year 2100, while taking account of months with 28, 29, 30 and 31 days. At that point, since 2100 will be a leap year, a correction will be necessary to enable the mechanism to once again provide precise calendar information until the year 2200, also a leap year.

This Grande Sonnerie Perpetual Calendar is a one-of-a-kind creation. It is delivered with a sophisticated packaging echoing the design of vinyl record players, and equipped with an integrated watch winding system and a natural amplification of the chime.

Technical details

Movement: Manufacture movement, Cal. DR 5307, comprising 923 parts & 82 jewels.
Grande Sonnerie with Westminster chime, 4 hammers, Perpetual Calendar, Minute Repeater, Tourbillon & Moon Phases.

functions: Indication of the hours and minutes, day of the week and months, leap years, moon phases and date; double power-reserve indication for the movement and the striking mechanism. 

Case: 18-carat pink gold, crown at 9 o'clock for time adjustments; strike/silence and Grande & Petite Sonnerie selectors at 10 and 7 o'clock respectively, minute repeater pusher at 9 o'clock.

Dial: 18-carat pink gold with alternating lacquered finish, opaline anthracite & snailed surface treatment, openworking; semi-transparent sapphire discs indicating the days and months. 
Strap: Black alligator leather strap, 18-carat pink gold triple-blade folding clasp. 

Water resistant: 30 metres or 99 feet. 

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