GMB2100BT-1A
GMB2100BT-1A is backordered and will ship as soon as it is back in stock.
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 colour 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-coloured vapour 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.
Timepiece Size Chart

Case dimensions (length x width x height) shown here are standard values and may differ from actual product dimensions. Use the case dimensions provided here as general reference values.
* Dimensions show the measurements indicated in the illustration above.
GMB2100BT-1A is backordered and will ship as soon as it is back in stock.
Basic Information
Basic Information
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BandSolid stainless steel band, One-touch 3-fold Clasp
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Case and bezel materialStainless steel
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Case size (L × W × H)
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ConstructionShock Resistant
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Power supply and battery lifeTough Solar (Solar powered)
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Time adjustmentBluetooth: Connects to a smartphone and automatically adjusts the time
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Water resistance200-metre water resistance
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Weight
Exterior
Exterior
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Back plateScrew Lock Back
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Compatible band size
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GlassMineral Glass
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Other
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Surface treatmentBlack ion plated bezel
Smartphone Link / App Connectivity Features
Smartphone Link / App Connectivity Features
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App connectivity featureAuto time adjustment, Easy watch setting, Approximately 300 world time cities, Time & place, Reminder, Phone finder
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Apps
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Smartphone link featureMobile link (Wireless linking using Bluetooth®)
Features
Features
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AccuracyAccuracy: ±15 seconds per month (with no mobile link function)
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Alarm / hourly time signal
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Battery display alertBattery level indicator
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CalendarFull auto-calendar (to year 2099)
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Energy saving featurePower Saving (display goes blank to save power when the watch is left in the dark)
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Light
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Mute featureButton operation tone on/off
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Other features
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Run time
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Stopwatch
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Timer
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World time

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

Made in Japan

Meticulously crafted metal exterior

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

Super Illuminator (high-brightness full-auto LED backlight) for maintaining watch readability in the dark











