Casio to Release G-SHOCK MR-G Inspired by the Tetsu-Tsuba Iron Guard of a Japanese Sword

Limited Edition Model Exudes Traditional Japanese Strength and Beauty


Basel, March 21, 2018 — Casio Computer Co., Ltd., announced today the release of a new addition to the flagship MR-G Series, which is part of its G-SHOCK line of shock-resistant watches. The MRG-G2000HA is inspired by the tetsu-tsuba (“iron sword guard”) on traditionally crafted Japanese swords, exuding a marriage of traditional Japanese strength and aesthetic sensibilities. A limited edition of just 350 of these watches will be released worldwide.

The MRG-G2000HA is inspired by the strength and beauty of Japanese swords, which have much in common with the toughness and good looks of the MR-G Series. The tsuba (sword guard) is an important part of a Japanese sword that provides utility by protecting the hands and delivers high artistry through its design. Tetsu-tsuba are notable for their bold look, characterized by the indentations made by hammering the iron into shape. For the MRG-G2000HA, the bezel and center rows in the watch band are treated to achieve a texture inspired by tetsu-tsuba to capture the boldness of the MR-G brand. Asano Biho, a third-generation master artisan of the tsuiki technique,*1 whose accomplishments include restoring Important Cultural Properties of Japan, supervised and helped to perform the manual application of a technique called arashi-tsuchime, used for every single watch.

The MRG-G2000HA uses traditional colorings inspired by the aesthetic quality of murasaki-gane (deep violet metal) and suaka copper material used in Japanese craft traditions. Murasaki-gane is a metal alloy including gold, which adds to both its value and rarity, achieving a deep violet hue. This coloring on the watch case and band gives the watch a bold, regal look. The deep colors are realized by the new application of AIP® (Arc Ion Plating),*2 a hardened coating to which a deep-layer hardening is applied for high abrasion-resistance.

The MRG-G2000HA features the Connected Engine 3-Way module, which pairs with a smartphone to automatically update the watch’s internal data, including the time, daylight savings time (DST), and changes in time zones. The MRG-G2000HA is an MR-G watch that brings together innovative technology with Japanese aesthetics.

  • *1 Tsuiki is a metalworking technique by which a sheet of metal is hammered out thinly into a three-dimensional shape. Historically it was used to make copperware and other metal containers, as well as armor and helmets, which needed to be made both thin and strong. Nowadays, the technique is applied to produce components for rail cars, aircraft, and other items.
  • *2 AIP® (Arc Ion Plating) is a registered trademark of KOBE STEEL, LTD.
    AIP®…A type of ion plating (IP) that uses high energy to vaporize coating materials causing a hard film with high adhesive properties to form on the metal’s surface. AIP® provides one of the hardest IP coatings.


Water Resistance
20 bar
Magnetic Resistance
ISO 764-compliant magnetic resistance
GPS Signal Frequency
1575.42 MHz
Radio Frequency
77.5 kHz (DCF77: Germany); 60 kHz (MSF: UK); 60 kHz (WWVB: USA); 40 kHz (JJY: Fukushima, Japan) / 60 kHz (JJY: Kyushu, Japan); 68.5 kHz (BPC: China)
GPS Signal Reception
Time-calibration (auto,* manual); acquisition of position information (manual)
  • GPS signals are received automatically when the watch recognizes they are available in the area.
Radio Wave Reception
Automatic reception up to six times a day (except for use in China: up to five times a day)
Communication Specifications
Communication Standard
Bluetooth® low energy*
Signal Range
Up to 2m (may differ depending on surrounding conditions)
World Time
39 cities (39 time zones,* daylight saving on/off) and Coordinated Universal Time: auto summer time (DST) switching
  • May be updated when connected to a smartphone.
1/1-second stopwatch; measuring capacity: 24 minutes; elapsed time
Countdown Timer
Measuring unit: 1 second (maximum 24 hours)
1 independent daily alarm
Other Functions
Smartphone Link functions (world time: over 300 cities, automatic time adjustment, easy watch setting); automatic hand correction (hour, minute and second hand); full auto-calendar; 12/24-hour format; battery level indicator; LED light (Super Illuminator and afterglow)
Power Source
Tough Solar power system (solar-charging system)
Continuous Operation
About 23 months with the power-saving function* ON after full charge
  • Power-saving after a certain period in a dark location
Size of Case
54.7 × 49.8 × 16.9 mm
Total Weight
Approx. 152g
  • The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Casio Computer Co., Ltd. is under license.