Jacob and Co Astronomia Replica Watch ASTRONOMIA SKY AT110.40.AA.WD.A

jacob and co astronomia replica
Case: 47mm; Thickness: 25mm; Material: 18K Rose Gold; Sapphire Apertures on Sides; Case Back: 18K Rose Gold; Bows: 18K Rose Gold lift- out Rotating "bows" for Winding, Time-Setting; Two Wheels on Caseback Sides for Synchronization of the Sidereal Time: Celestial Dial and Oval SkyIndicator; Crystal: Unique Domed Sapphire with Anti-Reflective Treatment;Water resistance: 30m (ISO 2281).

Dial: Celestial Dial: Blue Grade 5 Titanium, 18K Gold hand-engraved and applied stars and zodiacal signs; Hour and Minute Subdial: Titanium, HandAngled and Polished, Lacquered Indexes; Differential Gear System; Hands:Hand Finished Blue.

Strap & Clasp: Alligator;18K Rose Gold Folding Buckle.Limited Edition: 18 Pieces; Individually Numbered Pieces.

1 One sidereal year is the time it takes the earth to orbit the sun with respect to the fixed stars.

2 Sidereal Day= 23.5640916 hours, it is the time it takes the earth to rotate on its axis (relative to vernal equinox).