Accueil   Coin des affaires   ChronoWIKI      Archives

Ouvrir une session | Inscription

Rechercher  
Retour au forum
Vue tabloïde  Vue mixte

Nouvelle Grand Seiko diver's - Spring Drive (Général)

posté par autrichongris , 11/08/20, 16:35
[image]

Pour les 60 ans de Grand Seiko, une nouvelle diver Spring Drive avec un nouveau calibre !

[image]


Et voila la littérature de la marque sur le nouveau calibre 9RA5. A priori le calibre est plus mince, RDM de 120h, bref, suffit de lire ci dessous :cool:

Grand Seiko introduces a new generation Spring Drive caliber that is slimmer, even more precise and has a greater power reserve. Caliber 9RA5 takes Spring Drive technology to a new level of excellence and opens a new era in the history of Grand Seiko.
Caliber 9RA5's thin profile is made possible by the re-design and re-positioning of the Magic Lever. In the new caliber, the new Offset Magic Lever is positioned away from the center of the movement to reduce its thickness. Remarkably, this is achieved with no loss of winding efficiency.
Caliber 9RA5 may be slim but it has enhanced rigidity and shock resistance thanks to the new layout of the gear train towards the center of the movement and a central bridge that holds them together. This One-piece Center Bridge achieves a shock resistance that meets the ISO standard for diver's watches.
The movement incorporates two barrels which deliver a power reserve of up to 120 hours. They are different sizes so as to deliver the torque required for the five day power reserve while optimizing the use of the limited space within the movement.
Caliber 9RA5 has an accuracy rate of ±10 seconds per month thanks to a new IC package and to the selection of highly stable quartz oscillators that have gone through a three-month aging process.
The finishing of 9RA5, also, the movement has a beauty that is uniquely Japanese and is inspired by the natural environment of the studio where it is made. The jewels echo the glittering stars that sparkle especially brightly during the early days of winter in the surrounding mountains and the delicate texture of the movement's surfaces reflect the frost that winter brings to the trees.

[image]

---
Je déteste deux choses: l'analyse et le pouvoir. Sviatoslav Richter

Répondre
 

Discussion complète:

Retour au forum
Vue tabloïde  Vue mixte
290665 messages dans 23874 discussions, 42641 usagers enregistrés, 990 usagers en ligne (2 enregistrés, 988 invités) :
allison, strikeline
RSS Feed
powered by my little forum