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MRGB2000GA Watch with Sword Background

40th Anniversary

Passion for craftsmanship, fusing tradition and innovation — A G-SHOCK 40th anniversary model inspired by the Japanese sword

Announcing a new collaboration with Sadanobu Gassan, one of the premiere swordsmiths in Japan, to commemorate the G-SHOCK 40th anniversary. This limited-edition watch is an addition to the MR-G series, the flagship G-SHOCK line. It presents a combination of strength and beauty with a range of features that incorporate the techniques and aesthetic of Japanese sword-making into the design.

The bezel’s recrystallized hybrid titanium expresses the Gassan family’s signature ayasugi-hada pattern. A decorative rasp-mark pattern and hand-carved inscription adorn the band. The recrystallized titanium case reproduces the look of the temper patterns of a Japanese sword. A blue grey AIP® treatment evokes the blue-tinged ferrous hue long thought to exemplify a finely crafted sword. Introducing an MR-G that embodies a deep passion for craftsmanship, fusing tradition and innovation.

Swordsmith Sadanobu Gassan inspecting work

Swordsmith Sadanobu Gassan

Born in Nara Prefecture in 1979. Born into the famous Gassan family of swordsmiths, a resident of the world of sword making from a young age. In 1998, began training with father, Sadatoshi Gassan. In 2006, recognised as a swordsmith by the Japanese Agency for Cultural Affairs. Since then, has continued to challenge himself in new areas of craftsmanship that carry forth the traditions of the past, and has won numerous prizes and accolades in various competitions. As sixth in the Osaka Gassan family, he is expected to take the lead in the next generation of Japanese sword-making. Currently serves as a director of the All Japan Swordsmith Association.

MRGB2000GA-1A unique watch linkage with kanji engraving

Band with kesho yasuri finish and carved inscriptions imbued with the swordsmith’s spirit

Kesho yasuri signifies a type of decorative rasp-mark pattern typically applied to the tang of a Japanese sword blade to prevent the blade from slipping out of the handle. Each watch features traditional Gassan yasuri-me rasp marks individually applied to the band’s center links by Sadanobu Gassan himself. Inscriptions of “鍛” and “錬” on two of the links identify the craftsman and symbolize the Gassan family’s devotion to sword forging. Handcrafting gives each watch a unique, one-of-a-kind sense of presence all its own.

Manufacturing process 1) additive manufacturing: 3D modelling of ayasugi-hada patterns built up in successive layers of laser melted Ti64 titanium alloy powder. 2) A Ti64 titanium cylinder takes 78 hours of building up successive layers to complete. 3) Hot isostatic pressing: The cylinder is filled with pure titanium powder and compressed at high temperatures under intense pressure to produce a hybrid titanium base material. 4) The base material cut to the thickness of the MR-G bezel.

Hybrid titanium bezel evoking the look of Gassan family sword blades’ ayasugi-hada patterns

The renowned Gassan family of swordsmiths has a proud tradition that spans 800 years. The most distinguishing characteristic of the swords they craft is a pattern called ayasugi created in the tempering of the blades’ steel. This beautiful pattern, evocative of rolling waves, is expressed in the material used for the watch bezel, along with its processing and finishing. 

MRGB2000GA-1A bezel parts

Hybrid titanium bezel crafting

A combination of pure titanium and a special Ti64 titanium alloy is molded and then recrystallised. Blue grey AIP® applied to the surface creates a distinctive pattern and color tone. No two watches feature quite the same appearance — each is truly one-of-a-kind.

angled beauty shot of MRGB2000GA-1A watch

Recrystallized titanium case capturing the beautiful look of sword blades’ temper patterns

The case is covered with a distinctive crystallised pattern, brought out by heat treatment applied to the pure titanium, to evoke the crystalline nie patterns that appear on Japanese sword blades. A deep-layer hardening process and titanium carbide finish applied to the case provide even greater strength and abrasion resistance. An engraved metal plate commemorating the G-SHOCK 40th anniversary is affixed to the side of the case.

front angle MRGB2000GA-1A watch beauty shot

Ferrous blue hue reproduced with blue grey AIP®

Ferrous blue hue reproduced with blue grey AIP®

An AIP® process is applied to the bezel and band to achieve hardness exceeding that of a diamond-like carbon (DLC) coating and enhanced abrasion resistance. The new blue grey hue expresses the blue-tinged ferrous colouration considered to be the mark of a finely crafted sword.
AIP® (arc ion plating) is a registered trademark of Kobe Steel, Ltd.

MRGB2000GA-1A watch, sword, swordsmith collage


MRGB2000GA-1A Analog watch face close up, with gold gray and silver accents

Dial with hishimaki-gara diamond pattern incorporating the worldview of Japanese swords

The traditional diamond-shaped hishimaki-gara pattern, often seen on Japanese sword handles, is used as a dial face texture, while a decorative design evoking the look of a folding fan adorns the perimeter. Additional design features — from index marks that evoke the curvature of a sword blade to hour and minute hands with multifaceted cuts — set the watch off with sophisticated textural appeal down to the finest detail.

MRGB2000GA-1A watch exploded view

Clad Guard Structure for durability and operability

The Clad Guard Structure builds shock resistance into the crown and buttons, ensuring toughness and ease of operation while reducing the case size. αGEL® inserted into the head cover of the crown helps to absorb shocks.
*αGEL is a registered trademark of Taica Corporation.
*Image shows the MRGB2000B-1A4.

MRGB2000GA-1A watch in front of mobile device

Solar-powered timekeeping with Bluetooth® and radio control for enhanced accuracy and reliability

MRGB2000GA-1A watch in dark with LED light illumination

Super Illuminator (high-brightness LED light) for readability in the dark

scratch resistant glass

Scratch-resistant, highly transparent sapphire crystal with an anti-reflective coating

Multiple functions, all at your fingertips
CASIO WATCHES(smartphone app)

  • Automatic time adjustment
  • Easy clock setting
  • World time (300 cities)
  • Watch status display
    Graphical display of time-reception status, solar power generation status, internal data update history and more.
  • Self-check
    Automatic evaluation of watch functions’ operational status. Displays a screen alert in the case of malfunction.
  • Phone finder


(Watch Functions)

  • Shock-resistant structure
  • ISO 764-compliant magnetic resistance
  • 20-bar water resistance
  • Tough Solar (solar powered)
  • Smartphone Link (automatic connection)
  • Radio-controlled (Multi Band 6)
  • Auto hand home position correction
  • Dual time
  • Stopwatch
  • Countdown timer
  • Alarm
  • LED light (Super Illuminator)
  • Date and day display

Bluetooth® is a registered trademark of Bluetooth SIG, Inc.

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