Chronoswiss Répétition à quarts – The World’s First Wristwatch with Quarter-Hour Repetition

In 2003, Gerd-Rüdiger Lang unveiled Chronoswiss Répétition à quart, the world’s first wristwatch with quarter-hour repetition.

A push of the pusher at the “10” position suffices to hear the tone of precious time exactly to every 15 minutes in this collection piece. When it launched, it was the world’s only wristwatch with the quarter-hour repetition functionality.

Chronoswiss Répétition à quarts - The World's First Wristwatch with Quarter-Hour Repetition

The Chronoswiss Répétition à quarts was developed in close cooperation of well-known mechanical experts. Alongside the Munich-based watch manufacturer, Chronoswiss, which contributed the manufactory’s own exclusive automatic Caliber C.126, the renowned manufacturer of complicated pieces, Dubois-Dépraz from the remote Vallée de Joux, participated in the development of this mechanical marvel.

Chronoswiss quarter repeater watch

Dubois-Dépraz supplied the fine repeater module E94 (all-or-nothing safety device) with eight jewels and a diameter of 28 millimeters. One little hammer strikes its gong to ring out the number of hours (“ding”), then two little hammers strike against two meticulously tuned gongs to ring out the number of quarter-hours (“ding-dong”).

Very specially shaped hands, so-called “Breguet Conique Squelette,” were chosen for this unusual model. These hands are available only from Chronoswiss.

Technical details

Model: Chronoswiss Répétition à quarts

References
CH 1640, platinum (95g) limited edition (99 pieces)
CH 1641, 18ct. gold (75g)
CH 1641 R, 18ct. red gold (75g)
CH 1641 W, 18ct. white gold (75g)
CH 1643, steel
CH 1643 co, steel, copper dial
CH 1641 R bk
CH 1643 bk

Displays
Sweep hour and minute
Small second

Case
Massive 25-part case, pusher and crown massive in the material of case, ø 40 mm, height 13,80 mm, smoothed and polished dial, Screwed-in, polished bezel with non-reflective sapphire crystal, Screwed-in bottom with full thread and non-reflective sapphire crystal, Turnip crown, repeater pusher at the “10” position, Screwed-in lugs with patented Autobloc System, water-resistant to 3 atm (30 m)

Movement
Manufacture Caliber C. 126 Movement ø 26,80 mm (11 3/4”’), 30 Jewels, shock absorber Incabloc, fine Regulation for index with excenter, 35 hours power reserve, 3 Hz., 21.600 A/h vibrations per hour (vph), individually numbered

Specialties
Automatic repeater with small second, (all or nothing safety), hour- and quarter-repeater

Module
Striking-work module E 94 (Dubois-Depraz), reserved especially for Chronoswiss. Dial-side mounted, ø 28 mm, height 8,35 mm, 8 Jewels, Quarter-hour repetition with “all-or-nothing” safety device, Repeater on two gongs beat

Dial
Massive 925 Sterling-Silver dial, painted, blue-varnished steel hands, Shape: Breguet Conique Squelette

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