Evolution 9 CollectionSLGC001

SLGC001

Evolution 9 Collection

  • Available at the Grand Seiko Boutiques and Grand Seiko Salons

Caractéristiques

High-beat precision and three days of power reserve come together in the new Tentagraph, Grand Seiko’s first mechanical chronograph.

The Tentagraph, an automatic high-beat chronograph, is the first watch of its kind from Grand Seiko. Powered by the new Caliber 9SC5, which uses the Caliber 9SA5 as its base, it is emblematic of the next generation of Grand Seiko sports watches, both for its technological innovation and its equally stunning Evolution 9 Style. With a power reserve of 72 hours, the Tentagraph is the longest-running 10-beat chronograph on the market today. And its design has been fully updated for active use and easy reading while in motion.

The Tentagraph’s case and bracelet are made from High-intensity titanium, which is about 30 percent lighter and more scratch resistant than stainless steel, and its bezel is made from scratch-resistant ceramic. The watch’s dial pattern evokes the magnificence of Mt. Iwate, the soaring peak visible from the Grand Seiko Studio Shizukuishi.

Spécificités

Exterior
Case back: See-through & Screw case back
Composition du verre: Saphir box- shaped
Revêtement en verre: Revêtement anti-reflet sur la surface interne
LumiBrite: Aiguilles et index LumiBrite
Dimension du boîtier: Diamètre 43.2mm Lug-to-lug 51.5mm Épaisseur 15.3mm
Band width: 23mm
Type de boucle: Fermoir à boucle déployante avec ouverture par bouton-poussoir
Movement
Calibre: 9SC5 Manuels d’utilisation
Type de mouvement: Automatique avec fonction de remontage manuel
Précision: - 3 à + 5 secondes par jour
  • Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.
Précision en condition d'utilisation normale: -1 à +8 seconde(s) par jour
Functions
Étanchéité: 10 bar
Résistance magnétique: 4,800 A/m
Poids: 154 g
Autres détails / Caractéristiques:
  • Couronne vissée
  • Contre une réaction allergique au métal
  • Chronographe avec cycle de 30 minutes sur 12 heures

The essence of Grand Seiko is infused with Japanese beauty.

Born in the pursuit of the ideal wristwatch, the Evolution 9 Collection evinces a new design grammar that is entirely consistent with the Grand Seiko Style of 1967. Through the new Evolution 9 Style, Grand Seiko forges a new path while honoring its origins.

Details about the Evolution 9 Style

Pursuing the ideal chronograph through a dial designed for legibility.

One signature of the Evolution 9 Style is its dial with redesigned indexes and hands, which have been created to achieve maximum legibility, allowing the wearer to check the time with just a glance. Everything about the Tentagraph’s chronograph and time-of-day displays has been thoroughly considered, from the placement of the hands relative to the indexes to the distance between the dial and hands. The recessed sub-dials sit a level below the main time-of-day display, enhancing the Tentagraph dial’s depth and legibility. And by placing the date between four and five o’clock, Grand Seiko’s designers ensured an index remains at each of the traditional hour positions while allowing for maximum readability for the time of day and the chronograph sub-dials.

Features of the Tentagraph Caliber 9SC5

The Tentagraph’s name describes key features of the Caliber 9SC5 movement inside: Ten beats per second, three days of power reserve, automatic winding, and chronograph.
Fully wound, the watch runs for 72 hours when the chronograph is in operation, which makes Tentagraph the 10-beat-per-second chronograph with the longest power reserve in the industry today*.

* Grand Seiko research as of March 2023

Details about 9SC5