‘mid Heaven’ Mechanical Gmt Limited Edition

A limited-edition watch commemorating the 25th anniversary of the Caliber 9S mechanical movement.

Its design depicts the clear blue sky as seen from the top of Mt. Iwate, the soaring peak visible through the windows of the Grand Seiko Studio Shizukuishi, where Grand Seiko mechanical watches are assembled. A classic form prevails thanks to this creation’s mirror-finished bezel and case, gently curved lugs with Zaratsu polishing, and a box-shaped sapphire crystal. Inside is the Grand Seiko Caliber 9S66.

Assembled at the Grand Seiko Studio Shizukuishi by skilled craftsmen and women, the self-winding Caliber 9S66 is a GMT movement that runs for approximately 72 hours when fully wound.

Exterior

Exterior: Stainless steel

Case back: See-through case back

Case back with 6 screws

Glass Material: Box shaped sapphire crystal

Glass Coating: Anti-reflective coating on inner surface

Case size: Diameter 39.5mm Lug-to-lug 46.9mm Thickness 13.7mm

Band width: 19mm

Clasp type: Three-fold clasp with push button release

Movement

Caliber no.: 9S66 Instructions

Movement Type: Automatic with manual winding

Power reserve: Approx. 72 hours(3 days)

Mean daily rate: +5 to -3 seconds per day

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.

Functions

Water resistance: Splash Resistant

Magnetic resistance: 4,800 A/m

Other details / Features:

LIMITED EDITION on the case back

Serial number engraved on the case back

35 jewels

24-hour hand (dual time display function)

Calendar-linked time difference adjustment function