Astronomia Regulator Green AR200.40.AA.AC.A

Description of the Jacob & Co. Watch

The Jacob & Co Astronomia Regulator Green AR200.40.AA.AC.A brings a contemporary green aesthetic to the spectacular three-dimensional mechanics of the Astronomia collection. Crafted in 18K rose gold with a single-block sapphire caseband, the 43 mm watch provides an expansive view of the hand-wound JCAM56 caliber and its continuously rotating architecture. A flying tourbillon, constant force mechanism, and independently displayed hours and minutes create an unconventional approach to timekeeping, while green polycarbonate sub-dials and a matching alligator leather strap give the watch a distinctive identity. Limited to 99 pieces worldwide, the Astronomia Regulator Green combines innovative haute horlogerie with bold luxury design.

What Makes the Jacob & Co Astronomia Regulator Green a Unique Tourbillon Watch to Buy

The Jacob & Co Astronomia Regulator Green offers collectors a distinctive alternative to conventional luxury tourbillon watches. Its separate hours and minutes displays travel around the movement on a central platform completing a full revolution every 60 seconds, creating a constantly changing mechanical spectacle beneath the sapphire crystal. Combined with an 18K rose gold case, vivid green details, and production limited to 99 pieces, it is a compelling Jacob & Co. watch for collectors seeking rarity, technical innovation, and unmistakable wrist presence.

Design and Craftsmanship

The 43 mm case combines 18K rose gold with a single-block sapphire caseband, allowing the intricate movement to be viewed from multiple angles. A curved anti-reflective sapphire crystal further enhances visibility, while the 18 mm case height provides the space required for the watch's vertical mechanical architecture.

Polished titanium forms the base of the display, complemented by domed green polycarbonate sub-dials with crisp white printed scales. 5N red gold Dauphine hands coordinate with the rose gold case, while a green alligator leather strap completes the distinctive color combination.

Movement and Performance

At the heart of the watch is the hand-wound Jacob & Co. JCAM56 caliber, an elaborate mechanical movement comprising 552 components. Operating at 21,600 vibrations per hour (3 Hz), it provides approximately 28 hours of power reserve.

The vertical central platform completes a full rotation every 60 seconds, while the flying tourbillon also rotates once per minute. A constant force device with a 1/6th of a second loading frequency helps regulate the delivery of energy.

Separate off-centered hour and minute sub-dials are controlled through two differentials, creating the regulator-style time display that gives this Astronomia its distinctive identity.

Features and Complications

• Hand-wound Jacob & Co. JCAM56 caliber
• 552-component mechanical movement
• 28-hour power reserve
• Vertical rotating central platform
• Full central platform rotation every 60 seconds
• Flying tourbillon with 60-second rotation
• Constant force device
• 1/6th of a second constant force loading frequency
• Separate hours and minutes displays
• Two differential mechanisms
• 18K rose gold and sapphire case construction
• Domed green polycarbonate sub-dials
• Green alligator leather strap
• Limited edition of 99 pieces worldwide

Specifications

Case

• Material: 18K rose gold and single-block sapphire caseband
• Diameter: 43 mm
• Height: 18 mm
• Crystal: Curved anti-reflective sapphire crystal
• Caseback: 18K rose gold
• Water Resistance: 30 meters (3 ATM)

Dial and Hands

• Base: Polished titanium
• Sub-dials: Domed green polycarbonate
• Scales: White printed
• Hands: 5N red gold Dauphine

Strap

• Material: Green alligator leather
• Clasp: 18K rose gold deployment buckle

Movement

• Caliber: JCAM56
• Winding: Hand-wound
• Components: 552
• Power Reserve: Approximately 28 hours
• Frequency: 21,600 vibrations per hour (3 Hz)
• Central Platform: 60-second rotation
• Tourbillon: Flying tourbillon with 60-second rotation
• Constant Force Device: 1/6th of a second loading frequency
• Time Display: Separate off-centered hour and minute sub-dials
• Differentials: Two