CHRONOSWISS Sirius Retrograde Day

The Sirius Retrograde Day is available in 18-kt red gold (with dark-grey or terracotta dials) and Stainless steel (with dark-grey or terracotta dials) versions. The solid 29-part case (18-kt red gold or Stainless steel) measuring 44 mm diameter houses the Chronoswiss Caliber C.286 automatic movement featuring a skeletonized rotor with côtes de Genève decoration.

The metal dial, which is available dark-grey or terracotta versions, has gold-plated applied markers, gold-plated and hand-finished Feuille hands. In addition to basic timekeeping functions, the dial of this timepiece boasts a date window at 12’o clock and a retrograde day indication at 6’o clock.

The Sirius Retrograde Day  features polished, flat, screw-down bezel with full thread and anti-reflective coating on one side of sapphire crystal, screw-down polished case back with sapphire crystal, onion-style crown and screw-in lugs with patented Autobloc System.

Technical details

Reference numbers
CH 8121 R ds: 18-kt red gold, dial dark-grey
CH 8121 R cp: 18-kt red gold, dial terracotta
CH 8123 ds: Stainless steel, dial dark grey
CH 8123 cp: Stainless steel, dial terracotta

Displays 
Sweep hours, minutes and seconds
Date window at 12 o´clock
Retrograde display of day

Case
Solid 29-part case
Polished, flat, screw-down polished bezel with full thread and anti-reflective coating on one side of sapphire crystal
Screw-down polished case back with full thread and anti-reflective coating on one side of sapphire crystal
Onion-style crown (solid in the material of the case)
Screw-in lugs with patented Autobloc System
Water-resistant to 3 atm
Measurements: Ø 40 mm, height 10,12 mm

Movement 
Chronoswiss Caliber C.286
Diameter: Ø 30 mm (13 ¼ ´´´)
Height: 5,20 mm
Jewels: 22
Balance: Glucydur, three-legged
Balance spring: Nivarox I
Fine adjustment: Index via eccentric cam
Frequency: 4 Hz., 28.800 vph (semi-oscillations)
Power reserve: Approx. 42 hours
Special features: Skeletonized rotor with côtes de Genève, ball bearings; polished pallet  lever, escape wheel and screws, plates and bridges with perlage

Dial 
Metal dial, gold-plated applied markers
Gold-plated hands, hand-finished, Feuille shape

Strap 
Louisiana crocodile leather
Clasp: Pin buckle or folding clasp

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