Casio G-Shock MTGB2000B-1A2 MT-G Carbon Core Guard Lightweight Metal


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These new lightweight metal models, with newly advanced shock-resistant structures, are the latest additions to the MT-G lineup that packs the latest that technology has to offer into shock-resistant designs that combine metal and resin materials.

A Carbon Core Guard structure combines with the Metal Core Card structure to create a new Dual Core Guard structure, which houses a module protected by an integrated carbon monocoque case and exterior metal parts. The metal frames have a new type of slide lever mechanism that makes band replacement quicker and simpler, and metal is also used for the outer case sides. Functionwise, these models maintain constant Bluetooth® connection with a smartphone running the G-SHOCK Connected app to obtain accurate time information from an on-line time server for automatic time adjustment, even if you move between time zones. MULTIBAND 6 automatically adjusts time settings based on reception of one of six calibration signals around the globe when you are within the range of a signal, even if connection with a smartphone is not possible, for accurate timekeeping no matter where your travels take you.

Multiband 6

Tough Solar ensures stable operation while using power-hungry functions

Bluetooth Connectivity

Approx. battery operating time: 5 months on rechargeable battery (operation period with normal use without exposure to light after charge) 29 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case : 55.1×51×15.9mm
Total weight : 127g
Case / bezel material: Carbon / Stainless steel
Resin Band
Carbon Core Guard structure
Sapphire Glass with non-reflective coating
TRIPLE G RESIST (Shock resistant, Centrifugal force resistant, Vibration resistant)


  • 5
    Does everything well

    Posted by Ed on 26th Nov 2021

    The watch is easy to learn and performs just as one would expect. It has reliably and accurate operated in all of its modes and recharges just by leaving it in a lighted window. The phone app is the best I have seen for a smart watch. Again it does just what one expects it to do -- adjusting the time, checking operation and reporting battery charge. The historical log provides a record of the watch performance over time. Having the full manual on line, that completely and understandably describes the operations, provides the owner with the ability to quickly review any functions that have been forgotten. The dial is very legible, so values can be read in any lighting conditions. A real Goldielocks watch.