
Evolution 9 Collection
SLGC006 - Tentagraph

Evolution 9 Collection
SLGC006 - Tentagraph

A striking dial pattern that evokes Mt. Iwate
Mt. Iwate is thought to have been formed around 700,000 years ago and has been one of the most active volcanoes in all of Japan, a country with more than 100 active volcanoes. One can sense the history of this soaring peak from its rough surface, etched by the traces of lava flows that extend along the north side. The striking radial dial pattern is inspired by a bird’s-eye view of Mt. Iwate’s ridge line.
High legibility, a hallmark of Evolution 9 Style
The space between the hands and the dial and indexes has been reduced as much as possible, allowing the wearer to see the time at a glance, even on a chronograph that displays a wealth of information. The date display, placed between the four and five o’clock positions, allows all twelve indexes to be placed in a way that ensures maximum legibility of the sub-dials.


A striking dial pattern that evokes Mt. Iwate
Mt. Iwate is thought to have been formed around 700,000 years ago and has been one of the most active volcanoes in all of Japan, a country with more than 100 active volcanoes. One can sense the history of this soaring peak from its rough surface, etched by the traces of lava flows that extend along the north side. The striking radial dial pattern is inspired by a bird’s-eye view of Mt. Iwate’s ridge line.

High legibility, a hallmark of Evolution 9 Style
The space between the hands and the dial and indexes has been reduced as much as possible, allowing the wearer to see the time at a glance, even on a chronograph that displays a wealth of information. The date display, placed between the four and five o’clock positions, allows all twelve indexes to be placed in a way that ensures maximum legibility of the sub-dials.
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A mechanical chronograph that imparts the spirit of Mt. Iwate reflecting the morning sunrise.
This mechanical chronograph, which has been created in the Evolution 9 Style, takes the fusion of Grand Seiko’s spirit with the aesthetic sensibilities of Japan to a high level. The dial pattern is reminiscent of Mt. Iwate, the peak visible from Grand Seiko Studio Shizukuishi, where Grand Seiko’s mechanical watches are manufactured. Its copper-pink color exudes a dignified presence as if bathed in morning sunlight.
Powered by the Caliber 9SC5, a chronograph movement vibrating at 10 beats per second, this creation operates continuously for up to about 72 hours (about 3 days) when fully wound.
LIMITED EDITION OF 300 PIECES.
PRE-BOOK NOW. DELIVERY OCTOBER 2025.
Exterior
Functions
- LIMITED EDITION on the case back
- See-through & Screw case back
- Serial number engraved on the case back
- Screw-down crown
- 60 jewels
- Tachymeter function
- Chronograph with 30 minutes & 12 hours
Movement
Product Reviews
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