Grand Seiko ‘Yuka Momiji’ – SBGJ273G Mechanical Hi-Beat GMT


A mechanical GMT showcasing a spectacular dial that depicts the colour of autumn leaves reflected in traditional lacquered flooring.

In Japan, the charms of changing seasons are woven into the fabric of everyday life. Taking up this concept, the latest Grand Seiko mechanical Hi-Beat 36000 GMT expresses the beauty of autumn as it might be experienced in a traditional Japanese building with floors of lacquered wood.

There, light pours in through windows, and the ebullient reds of autumn leaves outside reflect off the floorboards in a mesmerizing display of nature’s beauty.

Each dial has a striated surface depicting a spectrum of reds, calling to mind how some lighter or darker floorboards might reflect varied shades of changing leaves. The GMT hand, rendered in a rich golden hue, adds another fall colour to the dial.

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Grand Seiko ‘Yuka Momiji’ – SBGJ273G Mechanical Hi-Beat GMT

Grand Seiko ‘Yuka Momiji’ Elegance Collection – Mechanical Hi-Beat 36000 GMT



  • 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 14.1mm
  • Band width: 19mm
  • Clasp type: Three-fold clasp with push button release
  • The perimeter of Band: 185mm


  • Caliber no.: 9S86 Instructions
  • Movement Type: Automatic with manual winding
  • Power reserve: Approx. 55 hours
  • 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.


  • Water resistance: Splash Resistant
  • Magnetic resistance: 4,800 A/m
  • Weight: 150 g

Other details / Features:

  • 37 jewels
  • 24-hour hand (dual time display function)
  • Calendar-linked time difference adjustment function

Reference: SBGJ273G


Additional information


Grand Seiko

Case Size





Stainless Steel

Product Type


Watch Movement

Mechanical Hi-Beat