The Black Ceramic Models.
Titanium and Ceramic in perfect harmony.
A sports watch of enduring beauty
In 2016, Grand Seiko expanded into the sports realm by presenting the Black Ceramic Limited Edition of four Spring Drive watches, executed in a dramatic combination of a zirconia ceramic outer case and a high-intensity titanium inner case.
For 2017, Grand Seiko will further widen its appeal of the brand and enrich the variation in the sports arena. The new series has the same sports design and a remarkable new hybrid titanium-ceramic bracelet construction. It also features a more powerful dial design with the Grand Seiko logo under the eleven o’clock position.
An exterior design that maximizes
the unique characteristics of zirconia ceramic
The light-weight hybrid titanium-ceramic case
The flat shape of the case was developed with the aim of making the most of the unique characteristics of zirconia ceramic.
Despite the difficulties of polishing ceramics, the beautifully crafted ceramic edges on the polyhedral shape are polished to a mirror finish and produce the intricate overlapping reflections that are the characteristics of the Grand Seiko design.
Ceramic does not typically have reflective properties, but multiple polished surfaces on the case reflect light even in dim conditions, creating a sharp, crisp visual impression.
A remarkable new hybrid titanium-ceramic bracelet construction
As the zirconia ceramic¹ parts are raised slightly above the level of the titanium, the bracelet is virtually impervious to scratches and will retain its pristine appearance. Remarkably, given the technical difficulty of polishing ceramics, the ceramic parts in the center of the bracelet are polished to a mirror finish and the signature Grand Seiko sharpness of the angles on each component has been achieved.
¹Zirconia ceramic is stronger and tougher than any other fine ceramic and seven times harder on the Vickers scale than stainless steel.
A dial design for increased visibility
The powerful dial design
A powerful, expansive design incorporating the Grand Seiko logo.
Extended minute hand and GMT hand
By reaching all the way to the hour markers, the minute and GMT hands enhance the legibility of the exact time.
A propeller-shaped second hand
The new propeller-style second hand is different in its left-right design and length.
Two different types of markers are used so each hand has a target mark, which allows users recognize the number of seconds more efficiently.
Markers and hour, minute and GMT hands with LumiBrite
LumiBrite inserts on the hands as well as the markers ensure high legibility.
|Driving system||Automatic with manual winding mechanism|
|Accuracy||±1 second per day (±15 seconds per month)|
|Power reserve||Approximately 72 hours|
|Remarks||Date display、Power reserve display function、GMT hand、Chronograph up to 12 hours、Calendar-linked time difference adjustment|