Grand Seiko SLGH019

Boutique Exclusive | Evolution 9 Collection | Online Exclusive

Grand Seiko ‘Midnight Mt. Iwate’ Hi-Beat


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This timepiece is exclusively available online from official Grand Seiko online boutiques.

The textured dial is inspired by the ridges of Mount Iwate, seen from the Shizukuishi Watch Studio where all Grand Seiko mechanical timepieces are made. Its deep colour reflects the beautiful mountain scenery illuminated by moonlight on a starry winter night.

‘The Nature of Time’ theme features prominently in Grand Seiko watch designs – the watchmakers’ pride in their surroundings is represented from engineering watch movements which emulate the smooth motion of time passing, to creating dials reflecting the beauty of Japanese nature.

This timepiece is within the Evolution 9 Collection; watches created in a contemporary design format based on the recognisable 1967 44GS Grand Seiko Style. This new grammar of design takes the brand’s ideals of beauty, legibility and wearability to new levels with nine design elements, based around evolving the original three design principles.

This hi-beat watch is powered by the revolutionary Calibre 9SA5, which offers a power reserve of 80 hours due to its enhanced energy efficiency, as well as a pioneering date-changing mechanism which uses MEMS technology for a faster, more precise date change.
Calibre 9SA5 incorporates three significant developments: the entirely new Dual Impulse Escapement, the Grand Seiko free-sprung balance with overcoil and the horizontal gear train. These three elements together set a new standard in high-beat horology.

Every Grand Seiko features signature high standards of precision, durability and legibility, handcrafted in Japan by Takumi artisans. Grand Seiko: beautifully, precise Japanese watchmaking, from the pinnacle of Seiko Watch Corporation’s in-house ‘manufacture.’


Accuracy: -3/+5 seconds per day
Calibre: 9SA5
Movement Type: Automatic with Manual Winding
Power Reserve: 80 Hours
Watch Exterior
Case Diameter: 40.0mm
Case Length: 47.0mm
Case Thickness: 11.67mm
Case Material: High Intensity titanium
Strap/Bracelet: Titanium
Lug Width: 22.0mm
Clasp: Three-fold clasp with push button release
Dial Colour: Blue
Other Specifications
Crystal Coating: Anti-reflective coating on inner surface
Crystal Type: Box shaped sapphire crystal
Water Resistance: 10 bar

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