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Evolution 9 Collection The Tentagraph SLGC001

High-beat precision and three days of power reserve come together in the Tentagraph, with a dial inspired by Mt. Iwate.

/SLGC001

SLGC001 SLGC001

Evolution 9 Collection

$21,000

Features

This model’s case design has evolved with a sporty character based on the Evolution 9 Style, a design language that represents a step forward for the Grand Seiko Style. The watch’s dial captures the serene beauty of a snowy moonlit night over Mt. Iwate, as seen from the Grand Seiko Studio Shizukuishi, the home of Grand Seiko’s mechanical watchmaking. The movement inside is the Calibre 9SC5, Grand Seiko’s first mechanical chronograph “Tentagraph.” Even with its 10-beat frequency, this movement achieves an impressive power reserve of approximately 72 hours (about three days) when fully wound.

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Specifications

Exterior
Case Material: Ceramic & Titanium
Glass Material: Box Shaped Sapphire Glass with Anti-Reflective Coating on the Inside
Case size: Diameter: 43.2mm
Thickness: 15.2 mm
Length: 51.5mm
Case Colour: Silver
Band/Bracelet: Bracelet - Titanium
Band Colour: Silver
Band Reference: A0EV223T0
Dial Colour: Blue Textured
Hand Indicators: Hour, Minute, Seconds
Calendar Indicators: Date
Dial Markers: Batons
Crown: Screw Down
Movement
Calibre no.: 9SC5 Instructions
Movement Type: Automatic - Powered By The Movement of the Wearer
Accuracy: +5 to -3 seconds per day
Power Reserve: 72 Hours Power Reserve (Approx)
Display: Analogue
Functions
Water Resistance: 100 Metres
Other details / Features:
  • Exhibition Case Back

An Evolution 9 sport design that enhances functionality.

The Evolution 9 Style represents the essence of Grand Seiko’s design philosophy, harmoniously blending Japanese aesthetics with refined craftsmanship. Based on this design language, this model adopts a form that ensures intuitive usability and excellent operability in any situation. The tachymeter bezel is made of highly scratch-resistant ceramic, allowing it to maintain its refined appearance over time.

Details about the Evolution 9 Style

A dial designed in pursuit of the ideal chronograph

The dial design follows the Evolution 9 Style and adopts a traditional chronograph layout. The distinctive hour and minute hands, along with the indexes with Lumibrite, are positioned with minimal clearance to enhance not only legibility during time measurement but also overall time readability. Mt. Iwate, visible from the Grand Seiko Studio Shizukuishi, serves as a source of inspiration and a spiritual anchor for the craftspeople. The dial combines a delicate pattern inspired by the mountain’s surface with a transparent blue tone, expressing the starry sky that spreads above its summit. This design reflects a vision of reaching the pinnacle of the ideal chronograph.

Features of the Tentagraph Calibre 9SC5

The Tentagraph’s name describes key features of the Calibre 9SC5 movement inside: Ten beats per second, three days of power reserve, automatic winding, and the fact that it is a chronograph.
Fully wound, the watch runs for 72 hours when the chronograph is in operation.

Details of Calibre 9SC5

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