GMCB2100Y-1A
GMCB2100Y-1A is backordered and will ship as soon as it is back in stock.
Immerse yourself in the sophisticated shine of the GMC-B2100Y, a full-metal 2100-style chronograph that inherits the legacy of the first-ever G-SHOCK.
We take it way back with the octagonal bezel design of the original DW-5000C from 1983, but rendered in metal with stainless-steel case and bezel.
Buffering components made of fine resin are installed between the bezel and the case for a shock-resistant structure with a full-metal exterior. The bezel — formed three-dimensionally in a time-intensive forging, cutting, and polishing process — is finished beautifully with a circular hairline treatment on the top surface and mirror polish on the slopes.
The indexes and inset dial rings, treated with a sophisticated vapour deposition finish, showcase refined detail, thanks to delicate moulding achieved with fine processing technology.
The band is made with soft, comfortable silicone, with a top surface protected by urethane film for enhanced abrasion resistance. The underside of the transparent urethane features a gunmetal vapour deposition finish, while the hairline-finished surface beautifully complements the full-metal case.
High-density mounting keeps the module slim, while still providing the advanced functions you love in a compact profile and comfortable fit.
Pairs with a smartphone via Bluetooth®. Simply tap into the dedicated app for precision timekeeping that keeps you on track. With Tough Solar, a high-brightness LED light, and a range of other convenient functions, this is a timepiece that delivers both superior style and practical utility.
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.
GMCB2100Y-1A is backordered and will ship as soon as it is back in stock.
Basic Information
Basic Information
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BandTough Silicone Band (Resin Band)
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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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Compatible band size
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CrownScrew Lock Crown
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GlassMineral Glass
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Other
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, 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 (hands stop to save power when the watch is left in the dark)
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Light
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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

















