9S

Introduced in 2023 , the Tentagraph was Grand Seiko 's first ever mechanical chronograph . The Tentagraph's name - “ TEN - T - A - GRAPH ” - describes the characteristics of the Caliber 9SC5 that powers this watch: TEN beats per second (36,000 vibrations

Before this Credor used 8L (lower grade version of GS Seiko 9S) and 4S (52 stream) movements. The 8L is very thick (~6 mm) and 4S is middle of the road (~4 mm). In 2005 they launched models with 4L (3.6 mm) movements--which were likely made from Soprod eb

... is hard to capture with my photo skills, but it is quite mesmerizing.

Grand Seiko Evolution 9 Collection unveils a brand-new mechanical chronograph -- the First Grand Seiko Mechanical Chronograph Ever Created Its birthplace was the Grand Seiko facility in Shizukuishi, where, for many decades, craftsmen and women have been r

Grand Seiko presents two special limited editions inspired by the sky over Mt. Iwate on the 25th anniversary of Caliber 9S Designed entirely from scratch, Caliber 9S, which debuted in 1998, represented Grand Seiko’s never-ending pursuit of high accuracy a

Thus less worry that we could damage the mainspring....cool. i always worry about overwinding my manual watches, since i broke the spring on my moonwatch. The SBGW231 is pure beauty. 37 mm. Manual winding. 70 hour PR. Big crown easy to wind. Old school Lu

Just what did we want? GS fans on WatchProSite asked for thinner watch overall, better specifications for timekeeping (no more of this +15/-10 stuff), more innovation in the movement, and a micro-adjust bracelet. Whoops, can't have it all, they forgot the

A sophisticated new high-beat caliber opens a new whole chapter in the history of Grand Seiko Caliber 9SA5 incorporates an entirely new escapement. In 1998, the creation of the 9S mechanical caliber opened a new chapter in the Grand Seiko story. Today, th

Do you ever tire of the rotor's "rainbow" of color? It's not like you stare at it every day. But I'm wondering how that "wears" over time. Likewise, I've wondered about the wild "blueberry" rotor on the Hi-beat 36000 for the 20th Anni. Of Calibre 9S. I lo

In researching, specifically for Grand Seiko, I have read that they are trying to maintain 30 years worth of capability to service the watches. I don't think that's an unreasonable expectation for them to work toward. The following material is about 18 mo