Astronomia Four-Axis Tourbillon Hematite AT180.40.AB.UE.A

Description of the Jacob & Co Astronomia Four-Axis Tourbillon Hematite AT180.40.AB.UE.A

The Jacob & Co Astronomia Four-Axis Tourbillon Hematite AT180.40.AB.UE.A is an extraordinary haute horlogerie timepiece that combines extreme mechanical engineering with the dramatic character of natural hematite. Crafted from 18K rose gold and surrounded by transparent sapphire architecture, the 47 mm watch showcases its three-dimensional movement from virtually every angle.

The Hematite reference AT180.40.AB.UE.A belongs to Jacob & Co’s Astronomia Revolution Four Axis collection, one of the brand’s most technically ambitious interpretations of the Astronomia concept. The model combines an ultra-fast rotating platform, a flying triple-axis tourbillon, constant-force regulation and an orbital hours-and-minutes display. The reference is confirmed in Jacob & Co's current catalog.

Why the Jacob & Co Astronomia Four-Axis Tourbillon Appeals to Luxury Watch Collectors

For collectors, the Jacob & Co Astronomia Four-Axis Tourbillon represents a remarkable fusion of avant-garde Swiss watchmaking, precious materials and mechanical artistry. The Hematite edition is particularly distinctive because its dark natural-stone base provides a dramatic contrast to the warm rose gold construction and transparent sapphire case architecture.

Unlike a conventional tourbillon watch, the Astronomia Four-Axis creates movement across multiple planes. The complete central mechanism revolves around the watch while the flying triple-axis tourbillon simultaneously rotates through three additional axes. This constantly changing architecture makes the AT180.40.AB.UE.A particularly appealing to collectors seeking rare Jacob & Co watches and exceptional high-end timepieces.

Design and Craftsmanship

The Astronomia Four-Axis Tourbillon features a substantial 47 mm 18K rose gold case surrounded by a single-block sapphire caseband. Its transparent architecture creates a panoramic showcase around the vertically constructed movement, allowing the complex rotating components to remain visible from the front and sides.

The hematite base introduces a deep metallic appearance beneath the movement, creating a sophisticated contrast with the polished rose gold components. An off-centered time display travels around the central axis while remaining correctly oriented for readability.

Movement and Performance

At the heart of the watch is Jacob & Co’s highly complex hand-wound mechanical architecture, developed to create four simultaneous axes of tourbillon motion.

The flying triple-axis tourbillon performs independent rotations while the entire mechanism is carried around the central vertical axis, creating the fourth dimension of movement. A constant-force mechanism helps regulate energy delivery to the rapidly rotating system.

On the opposite side of the architecture, a differential-controlled hours-and-minutes display compensates for the rotation of the central platform, allowing the time indication to remain upright as it orbits around the watch.

Features and Complications

• Four-axis tourbillon architecture
• Flying triple-axis tourbillon
• Rotating vertical central platform
• Off-centered hours and minutes
• Differential-controlled orbital time display
• Constant-force mechanism
• Hematite decorative base
• Hand-wound mechanical movement
• 18K rose gold construction
• Single-block sapphire caseband
• Curved anti-reflective sapphire crystal
• Three-dimensional mechanical architecture
• Swiss Made

Specifications

Case

• Material: 18K rose gold
• Diameter: 47 mm
• Caseband: Single-block sapphire crystal
• Crystal: Curved anti-reflective sapphire crystal
• Construction: Three-dimensional transparent architecture
• Caseback: 18K rose gold
• Decorative Material: Hematite
• Collection: Astronomia Revolution Four Axis
• Reference: AT180.40.AB.UE.A

Dial

• Base: Hematite
• Style: Three-dimensional orbital display
• Display: Off-centered hours and minutes
• Indexes: Applied rose gold-tone indexes
• Hands: Rose gold-tone hands
• Architecture: Rotating orbital time display
• Distinctive Elements: Hematite base and multi-axis tourbillon mechanism

Bracelet/Strap

• Material: Alligator leather
• Style: Luxury dress strap
• Clasp Type: Deployant buckle
• Clasp Material: 18K rose gold
• Adjustability: Secure adjustable fit

Movement (Jacob & Co Astronomia Four-Axis Tourbillon AT180.40.AB.UE.A)

• Caliber: Jacob & Co manufacture mechanical caliber
• Mechanism: Manual winding
• Tourbillon: Flying triple-axis tourbillon
• Architecture: Four-axis rotating tourbillon system
• Central Platform: Rotating vertical architecture
• Functions: Hours and minutes
• Time Display: Off-centered orbital indication
• Differential: Maintains upright time display during rotation
• Regulation: Constant-force mechanism
• Construction: Three-dimensional mechanical movement
• Certification: Swiss Made