CONCIERGE PRICE: $11156

It is on a perfectly polished surface that the play of shadows and light is best expressed, creating a subtle harmony. An interaction that is found in the traditional Japanese sliding door Shoji, in the translucency of the screens, in the finesse of the Japanese fans.

A COMPLETE AND BEAUTIFULLY FORMED MECHANICAL HI-BEAT 36000

In 1968, Grand Seiko introduced Japan’s first automatic 10-beat watch (61GS) to the world.

In 2009, 10-beat Caliber 9S85 surpassed the original, with high precision parts created using sophisticated modern technology assembled with skills honed over the many decades of Grand Seiko’s watchmaking.

Innovations to the precision controlling mainspring, the hairspring, and the escapement mean that the 9S Mechanical is not simply a revival of the 10-beat movement of the past, but an entirely new incarnation of this high-precision movement.

In every detail, it is faithful to the ‘Grand Seiko Style’, the embodiment of the Grand Seiko design philosophy which started with the 44GS.

The black dial creates a strong impression with its ‘Mount Iwate pattern’, a delicate and beautiful radial pattern, inspired by the many-ridged contours of the Mt. Iwate, the mountain that is visible through the windows of the Shizuku-Ishi Watch Studio where Grand Seiko mechanical watches are made.

The delicacy, strength and beauty of the movement can be enjoyed the exhibition case back.

THE 9S85 CALIBER

The challenge of making a high-beat movement is one that only a few watchmakers choose to accept. With its higher oscillation rate of ten beats per second, greater accuracy is achievable, but this increased precision comes at a price because the faster rotational speed can take its toll on the power reserve and even the longevity of the whole movement. Grand Seiko’s 10 beat movement meets these challenges and delivers an accuracy of +5 to –3 seconds a day, a power reserve of 55 hours and the durability for which every Grand Seiko watch is renowned. Caliber 9S85 is the result of many years of development and of advances both in the design and manufacture of components and in the materials themselves.

THE CHALLENGE OF A 10 BEAT MOVEMENT

Although the theoretical advantages of the 10 beat movement are well known, to produce a watch that is durable, reliable and precise is extremely difficult. The two main difficulties are driving time and movement durability. A rapidly oscillating balance wheel requires a lot of power from the mainspring. The mainspring must be able to supply the balance wheel with the energy it needs to move back and forth at high speed. The wound mainspring has to be able to deliver a high level of torque to be able to supply enough power to the balance wheel for long enough to ensure a high power reserve. At the same time, the escapement mechanism that transfers the oscillations from the balance wheel through to the gear wheel train has to be as durable as any other mechanical watch. A formidable challenge indeed.

– THE HAIRSPRING –

NEW MATERIALS TO ENHANCE FUNDAMENTAL PERFORMANCE

Using the experience accumulated over the 50 years of Grand Seiko’s history, a new generation of Sopron alloys was developed for the hairspring, which is at the very heart of any watch movement and whose performance determines the precision of the watch over time.

After some five years of development, a new alloy, Sopron 610 was created. Compared with previous alloys, Sopron 610 had around twice the impact resistance and a magnetic resistance more than three times higher.

– THE ESCAPEMENT MECHANISM –

MEMS TECHNOLOGY TP ENHANCE COMPONENT PRECISION

Precision engineering is the route to greater accuracy in every watch, but most of all in a high beat caliber. Thanks to technologies developed in-house for semiconductor manufacturing, the escape wheel and pallet fork used in Caliber 9S85 are made with a precision of one ten thousandths of a millimetre and therefore deliver greatly enhanced performance.

The secret is MEMS. MEMS (Micro Electro Mechanical System) is a technology that allows these critical components to be lighter, smoother and, in the case of the escape wheel of a more intricate design. The new design of the escape wheel featured oil reservoirs at the end of each gear tooth, improving the retention of oil, on which the smooth working of the gear depends.

– THE MAINSPRING –

INCREASED TORQUE FOR HIGH-SPEED OSCILLATION AND A LONGER POWER RESERVE

A 10 beat movement must have a mainspring that can ensure a high level of torque to supply the power required for the increased oscillating rate. After six years of development a new alloy, Sopron 530, was developed for the mainspring. It delivers about 6% more power than its predecessor and a power reserve of five more hours while maintaining the same degree of corrosion resistance, durability, and magnetic resistance. The new mainspring powers the Grand Seiko 10 beat movement for a remarkable 55 hours when fully wound.

WHAT MAKES THE 9S MECHANICAL SPECIAL

The concept of Grand Seiko was born from the desire to build the world’s best watch, and the collection continues to push precision in mechanical watches to the limits of timekeeping technology.

As a true manufacture, Grand Seiko incorporates the latest technology alongside its breadth of craftsmanship to raise the art of watchmaking to its peak.

TECHNICAL SPECIFICATIONS
REFERENCE : SBGH263G

// LIMITED EDITION OF 453 PIECES WORLDWIDE //

CASE

– Size : Diameter 39.5mm×Thickness 13.1mm

– Stainless steel

– Glass : Dual-curved sapphire

– Coating : Anti-reflective coating on inner surface

– Water resistance : 3 bar

DIAL

– Champagne

– Golden Hands and numerals

– Arabic numerals

MOVEMENT

– Caliber 9S85

– Driving system : Automatic with manual winding capacity

– Power reserve : Approx. 55 hours

ACCURACY

– +5 to -3 seconds per day (when static)

– +10 to -1 seconds per day (normal usage accuracy)

FUNCTIONS

– Hours & Minutes

– Central second

– Date

– Manual winding possible

MAGNETIC RESISTANCE

– 4800 A/m (60 Gauss)

STRAP & BUCKLE

– Brown Crocodile Leather strap

– The perimeter of bracelet : 186.0mm

– Three-fold clasp with push button release

Slay Billionaire offers free and insured worldwide delivery. You can expect your timepiece to be delivered in average within 2-5 working days for the UK and European Community, and 4-8 working days for the rest of the World.

Concierge Price: $11,156
Includes complimentary worldwide shipping

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