Arnold & Son - Arnold & Son,  Time Pyramid Rose Gold, 1TPAR.S01A.C125A
Arnold & Son - Arnold & Son,  Time Pyramid Rose Gold, 1TPAR.S01A.C125A

Arnold & Son, Time Pyramid Rose Gold, 1TPAR.S01A.C125A

Arnold & Son | 48'800 € Tax inc.

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Time Pyramid

Deftly demonstrating its British heritage and ingenuity in watchmaking, Arnold & Son unveils a totally new watch movement with unique architecture: Time Pyramid. Conceived, designed and developed in-house the skeletonised pyramid-shaped movement A&S1615 seemingly floats between two sapphire crystals.

Inspired by the regulators created by John and Roger Arnold over two hundred years ago, and by antique British skeleton clocks, the Time Pyramid offers a highly cohesive and seductive blend of watchmaking feats that includes regulator, skeleton, vertical linear movement, pyramid-placement of components and multi-dimensional depth.

The skeletonised calibre A&S1615 follows the original regulators from the brand with its component positioning and detailed 3D visual appeal. Movement parts and indications are built on three levels, with the subsidiary seconds dial on the bottom, the hour indications on a sapphire crystal disc in the middle level, and a silver top ring for the minute's indication. While the movement is extremely thin - at just 4.4 mm - the multiple levels bring amazing depth and detail to the timepiece. To further enhance the balance and symmetry of the Time Pyramid, the crown is positioned at six o’clock.

The gear train runs vertically in a linear format connecting the two barrels at six o’clock to the balance wheel at twelve o’clock and endowing the movement with its pyramidal structure. The bridges are designed so that all the wheels, the two mainspring barrels, the escapement and balance wheel are all visible from the dial side.

Additionally, the movement is fitted with two power reserve indicators – one each on each side of the linear gear train – to display the energy level for each barrel separately. The power reserve hands indicate the reserve level via graduated dots and demonstrate how one barrel transfers energy to the second one. Essentially, as the first barrel winds the second one, the power reserve indicator of the first barrel goes down, while the second one goes up – making for an accurate and intriguing readout. The two mainspring barrels supply the hand-wound calibre with a 90-hour power reserve and provide a more constant force to the wheel train.

As with every Arnold & Son timepiece, the movement of the Time Pyramid is magnificently hand decorated with manually chamfered bridges and polished edges, Côtes de Genève, circular-grained wheels and blued screws, all yielding a striking masterpiece of decorative craftsmanship and brilliant execution.

The Time Pyramid measures 44.6 mm in diameter in its 18-carat red gold or stainless steel case. Viewed from the side, the case is stepped and tapers from top to bottom, the widest section accommodating the extra-large glass with the lower part narrowing 

Technical specifications

Functions: hours, minutes, seconds, double power reserve indication


Calibre A&S1615, mechanical manual-winding

Jewels 27

Diameter 37.60 mm

Thickness of 4.40 mm

Power reserve 90 hours

Frequency 3 Hz / 21,600 vph

Decoration main plate: rhodium, satin-brushed

bridges: Côtes de Genève, hand-polished and chamfered

wheels: circular satin-brushed

 screws: blued

Dial: sapphire, circular satin-finished dial frame with chamfered and polished edges


Material 18-carat red gold (5N)

Diameter 44.60 mm

Crystal cambered sapphire with an anti-reflective coating on both sides

Back sapphire crystal transparent

Water resistance 30 metres / 100 feet


Material hand-stitched brown or black alligator leather

Clasp pin buckle in 18-carat red gold (5N) or stainless steel




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