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FULL METAL
2100 Series

GM-B2100BT-1A

NEW 12/2025
My GShock

A collection of full-metal descendants of the first-ever G-SHOCK — introducing the GM-B2100 with a black bezel highlighting their iconic form. The striking two-tone black-on-silver color scheme projects G-SHOCK toughness in a model sure to suit your personal style. The top bezel of the GM-B2100BT is treated to a hairline finish, exuding the premium elegance of sophisticated metal texture. Indexes finished in silver-colored vapor deposition enhance visibility and add a beautiful contrast with the dial. Crafted from stainless steel, the bezel undergoes meticulous processes of forging, cutting, and polishing to achieve an exquisite finish of depth and dimension. To achieve the same original G-SHOCK shock-resistant structure in a full-metal timepiece, buffering components made of fine resin are inserted between the stainless-steel bezel and case. And dimpling is applied to metal band pieces to reproduce the look of the very first G-SHOCK resin band design. The stainless-steel case of the GM-B2100BT features the same screw-lock construction as the original to ensure a tight seal. And the fact that the watch is crafted at Yamagata Casio, the “mother factory” where the first ever G-SHOCK was made, brings the whole design full circle.

  • Full-metal shock-resistant structure: Staying true to origins and constantly innovating * Image shows the GM-B2100D-1A.
  • Made in Japan
  • Solar-powered timekeeping with Bluetooth® for enhanced accuracy and reliability
  • LED light
  • Meticulously crafted metal exterior
  • Back engraving
  • From left: GMW-B5000BT-1, GM-B2100BT-1A, GMC-B2100BT-1A

Specifications

FEATURES

Striking black on silver projects G-SHOCK toughness: Monochrome design suited to a wide range of styles

This collection is based on the GMW-B5000, GM-B2100, and GMC-B2100 — watches that inherit the iconic form of the DW-5000C, the first G-SHOCK. The top bezel, a defining feature of the design, is finished in black. Crafted from stainless steel, the bezel undergoes demanding processes of forging, cutting, and polishing to achieve a sharp, dimensional finish.

FULL METALのメインビジュアル

Full-metal shock-resistant structure: Staying true to origins and constantly innovating

Buffering components made of fine resin are installed between the stainless-steel bezel and case. The shock-resistant structure maintained since the very first G-SHOCK is achieved in a timepiece with a metal exterior. Also, a three-pronged structure is employed for the connective part of the band to disperse shocks to the connecting pipes. Only the case backs of the GMW-B5000BT and GM-B2100BT feature a screw-lock construction that ensures a tight seal.

* The orientation of the case back may vary from watch to watch due to details of the manufacturing process.
* Image shows the GMW-B5000D-1.


Made in Japan

The watch is crafted at Yamagata Casio, the “mother factory” where the first-ever G-SHOCK was made. Loyalty to the roots of that very first model makes these watches heirs to the original spirit of toughness that this made-in-Japan brand gave the world.


Meticulously crafted metal exterior

The bezel and case undergo meticulous processes of forging, cutting, and polishing, precisely crafting them into robust, powerful forms. Dimpling is applied to metal band pieces to reproduce the look of the resin band design of the very first G-SHOCK.

DETAILS

Solar-powered timekeeping with Bluetooth® for enhanced accuracy and reliability

Solar-powered

Super Illuminator (high-brightness double LED light) for maintaining watch readability in the dark

Super Illuminator for maintaining watch readability in the dark

GM-B2100BT

CASIO WATCHES (Smartphone app)

Multiple functions, all at your fingertips
CASIO WATCHES
(Smartphone app)

- Automatic time adjustment (four times a day)
- Easy watch setting
- World time
(about 300 cities)
- Time & place: Pressing a button on the watch records the date, time, and position on a map within the app. Useful as an activity log.
- Reminder: The watch provides reminders of up to five upcoming events, settable in the app.
- Phone finder

Watch Functions

• Shock-resistant structure
• 20 bar water resistance
• Solar-powered
• Smartphone Link
• Hand shift feature
• World time 
(38 cities)
• 1/100-second stopwatch
• Countdown timer
• 5 daily alarms
• Double LED light 
 (Super Illuminator)

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. Any use of such marks and logos by Casio Computer Co., Ltd. is under license.

*The color tone of the listed products may differ from the actual product in some cases.

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