Monochrome Watches
An online magazine dedicated to fine watches
First Look

The Grand Seiko Evolution 9 Tentagraph SLGC007

A Subtle but striking update in ice-blue

| By Denis Peshkov | 2 min read |

Grand Seiko got into the spotlight in 2023 with the launch of its first-ever mechanical chronograph, the Evolution 9 Tentagraph SLGC001, filling the gap in the brand’s 60-year legacy of precision watchmaking – surprisingly, it was missing one until recently. For 2025, Grand Seiko introduces the Tentagraph SLGC007 – a near-identical successor to the original, distinguished primarily by its new dial colour.

Like the earlier model, the 43.2mm diameter, 100m water-resistant case of the Evolution 9 Tentagraph SLGC007 is crafted from high-intensity titanium, staying true to the design language of Grand Seiko’s Evolution 9 sports watches. It measures 15.3mm thick but is more comfortable to wear thanks to its refined curvature and shorter lug-to-lug length. Rooted in Grand Seiko’s Grammar of Design from the 1960s yet modernized for superior ergonomics, the multisided case features a predominantly brushed finish accented by a sleek Zaratsu-polished bevel along its side. The tachymeter bezel in black ceramic combines polished and brushed surfaces, while the well-proportioned pushers ensure ease of use. As expected from a modern chronograph, it has a screw-down crown, a transparent case back, and a box-shaped sapphire crystal.

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For the dial, as can be expected, Grand Seiko turns to its natural inspirations – the pattern resembling Mt. Iwate’s ridges as seen from above in a striking silvery ice-white and blue finish – “honouring Mt. Iwate’s landscape in harsh winter.” Subtle yet captivating, it brings a fresh look to this chronograph and proves that a well-thought-out dial update can make all the difference.

The dial layout remains balanced and traditional, with a 3-6-9 subdial arrangement for the small seconds, 30-minute, and 12-hour counters in contrasting black. A colour-matched date window at 4:30 blends into the design, keeping the aesthetic reasonably clean. Classic to the Evolution 9 collection, the hands and markers are treated with LumiBrite for better readability.

The movement inside is the automatic, high-frequency – 36,000 vibrations/hour – Caliber 9SC5 with twin barrels and a proprietary Dual Impulse Escapement. It is equipped with a vertical clutch and a column wheel chronograph module. The movement provides 72 hours of power reserve that is not affected by running the chronograph and is regulated for +5 to -3 seconds per day accuracy.

The Grand Seiko Tentagraph SLGC007 is worn on a titanium bracelet, matching the case material and finishes. It is closed by a folding clasp with a push-button release and features a series of adjustment holes. The SLGC007 will be available at Grand Seiko Boutiques and select retail partners worldwide beginning in May 2025. The price is EUR 15,000.

For more information, please visit Grand-Seiko.com.

https://monochrome-watches.com/first-look-grand-seiko-evolution-9-tentegraph-slgc007-mt-iwate-ice-white-blue-9sc5-watches-and-wonders-2025-specs-live-pics-price/

4 responses

  1. Why can’t Seiko make a thinner integrated chronograph movement? Surely a company with their resources and heritage can do better than this? It’s 4-5mm too big and 2-3mm too thick, and just isn’t competitive at the price. Sorry but as a Seiko fan, Seiko has been so disappointing over the last few years

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  2. For those watching at home, the recipe is:
    pick one hockey puck, add some “zaratsu”, a random season, one lake, forest or mountain, a vaguely poetic named colour, a ton of cheek and voila! you’ll have “aficionados” lining up for miles.

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