Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteG-SHOCK’s MR-G collection brings together the line’s shock-resistant watch design, Japanese craft influences, detailed metal finishing and modern materials. It is a family of watches rather than one uniform design: the MRG-B2100 draws on kigumi interlocking woodwork, while the MRG-B5000 reworks the original square G-SHOCK in a complex metal construction.
What MR-G means within G-SHOCK
Casio presents MR-G as its flagship G-SHOCK line. Its collection includes the MRG-B2000/B1000, MRG-B2100, MRG-B5000 and MRG-BF1000 families, so the shared idea of combining Japanese craft traditions with contemporary technology takes different forms across the range. Casio also names Yamagata Casio in its discussion of craftsmanship.
The result is not simply a traditional motif applied to a modern watch. MR-G models use G-SHOCK design cues and shock-resistant construction as a starting point, then distinguish themselves through their materials, finishing, case and band construction, and model-specific features.
How the MRG-B2100 draws on kigumi
Interlocking woodwork translated into a dial
The MRG-B2100’s design concept takes inspiration from kigumi, the Japanese practice of joining pieces of wood through interlocking forms. Casio describes the family as combining traditional aesthetics, materials and artisanal craftwork with a compact, comfortable form and multi-component construction.
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On the MRG-B2100B, Casio describes a corrugated geometric lattice pattern on the dial. Its openings let light reach the watch for solar power generation, making the pattern both a visual reference and part of the watch’s functional design. The MRG-B2100D-2A uses dimensional latticework that Casio says evokes kigumi; its dial is rendered in hanada-iro blue.
A distinctive example, not a description of every MR-G
The kigumi reference belongs to the MRG-B2100 design story. Other MR-G families have different lineages and details, so it should not be treated as a collection-wide motif.
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- Smartphone Link Functions; Battery Level Indicator; New Layer Guard Structure; Tough Solar; Dual Dial World Time; Chronograph
- 200 Meter Water Resistance; Shock Resistance; Neobrite; Bluetooth Capability
- Quartz Movement
- Case Diameter: 53.8mm
- Water resistant 200m (660ft): in general, suitable for professional marine activity and serious surface water sports, but not diving
How the MRG-B5000 updates the original square
Familiar face, different construction
The MRG-B5000 preserves visual details associated with the original square G-SHOCK: the brick-patterned face and red line. Casio calls it a “true heir” to that model’s identity. The case and exterior, however, are built as a multi-component metal design rather than a straightforward copy of the original’s construction.
Casio says the MRG-B5000 bezel consists of 25 components. For the model described on its product page, the top bezel uses COBARION, the band uses DAT55G, and the case, back cover and buttons use Ti64 titanium alloy. Casio also lists solar power, smartphone link, radio control, sapphire crystal and 20-bar water resistance for that described MRG-B5000. Confirm those details against the exact model suffix: specifications and materials can vary among versions.
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- Countdown timer, full auto calendar, 12/24 hour format
- Quartz Movement
- Case Diameter: 51.2mm. Hourly time signal
- Water resistant 200m (660ft): in general, suitable for professional marine activity and serious surface water sports, but not diving
- Shock Resistant; 200M Water Resistant; Auto LED; World Time; 5 Daily Alarms; 1/100th Sec. Stopwatch.
Materials and finishing claims
Casio describes COBARION as having hardness about four times that of pure titanium and DAT55G as about three times as hard as pure titanium. These are manufacturer comparisons, not independent test findings. Casio also describes titanium carbide finishing on one variant and DLC coating on another; those finishes should not be assumed to apply to every MRG-B5000.
How to compare MR-G models
Start with the design lineage, then compare the exact construction and functions of the model you are considering. A family name alone does not establish that two watches share the same materials, finish or features.
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- Tough Solar Power & Multi-Band 6 Atomic Timekeeping: Enjoy precise timekeeping with radio-controlled accuracy across six calibration signals worldwide, powered by Casio's efficient solar technology for continuous operation.
- Durable Stainless Steel Construction: Features a robust stainless steel band with a one-touch 3-fold clasp and a shock-resistant resin/stainless steel case, providing both durability and a sleek, sophisticated look.
- 200-Meter Water Resistance: Built to withstand extreme conditions, this watch is suitable for professional marine activities and serious surface water sports, offering water resistance up to 200 meters (660 feet).
- Versatile Timekeeping Functions: Equipped with world time across 31 time zones (48 cities), a 1/100-second stopwatch, 24-hour countdown timer, and 5 independent daily alarms (including a snooze alarm) to keep you on schedule.
- Electro-Luminescent Backlight with Full Auto EL: The blue-green EL backlight with afterglow ensures optimal readability in low-light conditions, automatically activating in dim environments for your convenience.
- Design: The MRG-B2100 is the kigumi-inspired option; the MRG-B5000 takes its cues from the original square G-SHOCK. The broader MR-G collection also includes the MRG-B2000/B1000 and MRG-BF1000 families.
- Materials and finish: Check the official specification for the exact suffix rather than assuming a family-wide material or coating.
- Functions: Verify features such as solar charging, radio timekeeping and smartphone link on the specific product listing.
- Water resistance and construction: Use the rating and construction details stated for the particular model, not for a neighboring MR-G.
- Local availability and price: Check Casio’s current listing for your market. When accessed on October 7, 2026, Casio Canada listed the MRG-B2100D-2A at CAD $6,700 and the MRG-B2000D-1A at CAD $3,500. Those were regional live-listing prices on that date, not worldwide prices or a guarantee of current availability.
What the product descriptions can—and cannot—tell you
Casio’s product pages explain the intended design, construction and listed specifications, but they are manufacturer descriptions. They do not establish independent comparative durability results or long-term ownership performance. The reviewed material also does not establish repair costs, comfort across wrist sizes, resale value or buyer satisfaction. Those questions require evidence beyond a design concept or a materials specification.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
