This full metal model features the dial color of the first G-SHOCK model, the DW-5000C, which was released in 1983.

The watch is decorated with red, which is the G-SHOCK brand color and represents the passion to continue challenging, blue, which represents high water resistance, and yellow, which represents shock resistance.

The stainless steel bezel is formed into a three-Dimensional shape through a time-consuming process of forging, cutting, and polishing, and the top surface is beautifully finished with a hairline finish and the slope is mirror polished.

The stainless steel case is the same as the original model, and has a highly airtight screw-back case.

To achieve a full metal shock-resistant structure, a fine resin cushioning material is installed between the bezel and the case.

In addition, the band connection has a three-legged structure to disperse the impact on the connecting pipe.

The metal band pieces have been given a dimpled finish, inheriting the resin band design of the original model.

The watches are also manufactured at Yamagata Casio, the mother factory that produced the original G-SHOCK.
- Shock-resistant structure
- Tough Solar (solar charging system)
- 20 ATM water resistance
- Mobile Link function (function linkage with compatible mobile phones via Bluetooth® communication)
- Needle retraction function (When the needle overlaps with the LCD display and is difficult to see, the needle can be temporarily retracted from above the LCD display)
World time: 38 cities (38 time zones, daylight saving time automatic setting function) + UTC (Coordinated Universal Time),
home city swap function
Stopwatch (1/100 seconds (less than 1 hour)/1 second (more than 1 hour),
24 hour counter, with lap/split
- Timer (set unit: 1 second, maximum set: 60 minutes, measured in 1 second units)
- 5 time alarms - Hourly time signal
- Battery indicator display
- Power saving function (display turns off after a certain period of time in a dark place to save power)
- Fully automatic calendar
- 12/24 hour display switching
- Operation sound ON/OFF switching function
- Date display (month/day display switching)
- Day of the week display (switchable between 6 languages: English, Spanish, French, German, Italian, and Russian)
Double LED light: LED light for dial (Super Illuminator, afterglow function, afterglow time switch (1.5 seconds/3 seconds)),
LED backlight for LCD (Super Illuminator, afterglow function, afterglow time switch (1.5 seconds/3 seconds))
- Operating time from full charge without solar power generation When using functions: Approximately 7 months When in power saving mode: Approximately 18 months
* When not linked to a smartphone, it operates with normal quartz accuracy (average monthly difference of ±15 seconds)

Model Number: GM-B2100SD-1CJF