As a model in the G-SHOCK 2100 series that specializes in "balancing design and functionality,"GBM-2100A-2BDRwas released in June 2024.
The octagonal design features a stainless steel metal bezel, a circumferential hairline on the top surface, and a time-consuming process of mirror polishing on the sides, an iconic form that inherits the DNA of the first G-SHOCK model. Blue vapor deposition is applied to the dial and silver vapor deposition is applied to the indexes to create a beautiful face with high contrast.
It maintains the slim size (49.3 x 44.4 x 11.9 mm, approx. 72 g) of the 2100 series, while providing comfortable operation with tough solar and Bluetooth. One of the features of this model is the environmental friendliness of using biomass plastic for the main resin parts of the case and band. It's a piece that can be matched with both casual and business settings.
The presence of the metal bezel stands out even when viewed side by side.
Blue vapor deposition x silver index——High contrast and fearless face.
GBM-2100A-4BDR (related colors)
GBM-2100A-8BDR (related colors)
■ Main features
- Stainless steel metal bezel (octagonal):Formed through forging, cutting, and polishing. Beautiful finish with top circumference hairline and side mirror polishing
- Blue vapor-deposited dial x silver vapor-deposited index:Transparent printed horizontal grid pattern creates a three-dimensional effect on the LCD and inner dials.
- Tough solar:Charging by photovoltaic power. When fully charged, it will last approximately 7 months when using functions and approximately 18 months when using power saving mode.
- Equipped with Bluetooth (Mobile Link):Automatic time adjustment with smartphone / World time compatible with approximately 300 cities
- Adoption of biomass plastic:Environmentally friendly materials are used for the main resin parts of the case and band.
- Shock resistant structure (shock resistant):High impact resistance, the origin of G-SHOCK
- 20 ATM waterproof:Also compatible with sports and waterside activities
- Neo Bright Luminous:Luminous treatment on the hands and index ensures visibility in dark places
- Double LED light (super illuminator):High brightness dual illumination for the dial and LCD section
- World time 38 cities (+UTC):With automatic summer time setting function
- Stopwatch:1/100 second, 24 hour meter, lap/split compatible
- Timer, 5 alarms, time signal:Full of functions as a daily timekeeper
- Fully automatic calendar/multilingual day of the week display:Switch between 6 languages: English, French, German, Spanish, Italian, and Russian
- Needle retraction function/power saving function:Achieves both visibility and power saving
■Specs
| brand | CASIO G-SHOCK |
|---|---|
| series | 2100 Series ANALOG-DIGITAL |
| Product number | GBM-2100A-2BDR |
| Target | men's |
| Drive method | Tough solar (solar charging system) |
| precision | Average monthly difference ±15 seconds (when not linked to smartphone) |
| driving time | Approximately 7 months when using the function / Approximately 18 months when using power saving (when fully charged) |
| case material | Resin (biomass plastic) + stainless steel (bezel) |
| band material | Resin (biomass plastic) + Stead |
| glass | inorganic glass |
| Dial color | Blue (vapor deposition treatment) |
| band color | black |
| case size | Height 49.3mm x Width 44.4mm x Thickness 11.9mm |
| Bandwidth (maximum) | 25mm |
| Bandwidth (min) | 21mm |
| Size that can be attached to the band | 140~215mm |
| weight | Approximately 72g |
| waterproof | 20 ATM water resistant |
| Shockproof | Shock-resistant structure (shock resist) |
| Bluetooth | Smartphone link (compatible with CASIO WATCHES) |
| Other functions | World time 38 cities + UTC / stopwatch / timer / 5 alarms / time signal / neobright night light / double LED light (super illuminator) / fully automatic calendar / needle retraction function / power saving / battery indicator / biomass plastic used |
| Release date | Released in June 2024 |
| Guarantee | 1 year warranty in store *Nanapure is currently running a 7-year warranty campaign. |
■ “Upgrading G-SHOCK” with metal bezel
The most important feature of GBM-2100A-2BDR is the stainless steel metal bezel. This bezel, which was formed through a time-consuming process of forging, cutting, and polishing, has a two-sided finish with a circumferential hairline on the top and mirror polishing on the sides, giving it a rich expression depending on how the light hits it. The iconic octagonal form inherited from the first G-SHOCK model stands out even more with the metal texture.
The difference in appearance from the regular G-Shock is obvious at a glance. The high-contrast face, which creates a contrast between the blue vapor-deposited dial and the silver-deposited indexes, has a sporty yet classy finish. The true value of the GBM-2100A series is the balance between maintaining the G-Shock feel and being able to wear it in a business setting.
■ “Reduce the hassle to zero” with Tough Solar x Bluetooth
GBM-2100A-2BDR is equipped with tough solar and will keep charging automatically when there is light. It can be operated for approximately 18 months in power saving state after a full charge, and there is no need to regularly replace the battery. This alone is sufficient, but by connecting to a smartphone via Bluetooth, you can automatically adjust the time and set world time for approximately 300 cities.
By linking with the dedicated app "CASIO WATCHES", you can also use functions such as time & place recording, reminders, and mobile phone search. The practical appeal of this model is that it eliminates the hassle of adjusting the time and changing settings every day.
■ The value of the 2100 series' "slim form"
At 49.3mm long x 44.4mm wide x 11.9mm thick and approximately 72g, it is one of the most compact and lightweight models in the G-SHOCK line. The profile, which is less than 12mm thick, fits easily into the cuff of a jacket or suit, and does not have the "unstylish look" characteristic of sports models. This is why it is chosen by a wide range of people, from those who are buying G-SHOCK for the first time to those who want to add it to their collection.
The band is compatible with a maximum of 215mm and a minimum of 140mm, so it fits a wide range of wrists, from thin to thick. The environmental friendliness of using biomass plastic also gives you peace of mind when choosing a model that will last for a long time.
■ Recommended for these people
- Those looking for the G-SHOCK 2100 series metal bezel model
- Those who are attracted to blue and black coloring
- Those who want a maintenance-free watch with tough solar and Bluetooth
- Those who want to use slim G-Shock in business situations
- People who want peace of mind during active scenes with 20 ATM water resistance
- Those who want to compare colors with GBM-2100A-4BDR/GBM-2100A-8BDR
- People who want to give G-Shock as a birthday/anniversary present
- Those who want to choose an environmentally friendly model such as one that uses biomass plastic
■ Buyer's comment
The GBM-2100A-2BDR has a really nice combination of blue metallized dial and metal bezel, and is a model that often makes people wonder, "Is this a G-Shock?" Adding the elegance of metal to the slim form of the 2100 series creates an all-rounder that is suitable for both casual and business situations. The tough solar and Bluetooth design means you don't have to worry about setting the time, making it perfect for everyday use, and it's a watch that strikes a high level of balance between practicality and design.
— Nanapure Buyer Fujimuro

