CASIO
CASIO G-Shock G-Steel GBM-2100-1A Watch
Solar-powered G-Shock with Bluetooth connectivity, 200 m water resistance and a bio-based resin case
- StyleSports
- MaterialResin
- MovementSolar
- ShapeRound
- Dial ColorBlack
- Dial MarkersIndex
- Solar charging powers the watch from any light source using Tough Solar
- Bluetooth Mobile Link syncs time and settings automatically with a smartphone
- 200 m water resistance suits swimming and surface water sports
- Shock-resistant construction protects the module against impacts and vibration
- Bio-based resin case and strap reduce reliance on fossil-based plastics
What this watch is and who it suits
The CASIO G-Shock G-Steel GBM-2100-1A is a solar-powered sports watch with an analog-digital display and 200m water resistance. Its bio-based resin case and strap combine a 49.8 x 44.4 mm octagonal profile with shock-resistant construction. The black dial shows world time across 38 cities, a 1/100-second stopwatch, five daily alarms and a date window. Bluetooth Mobile Link provides automatic time adjustment and settings control from a smartphone.
Check your setup before ordering
Verify that the 44.4 mm case thickness and 49.8 mm width fit your wrist and any cuff or gear you wear over it. The fixed resin bezel and mineral crystal sit flush to the case, so confirm the buckle clasp length suits your strap preference. Ensure you can charge the Tough Solar movement under regular indoor or outdoor light. The Bluetooth link requires a compatible smartphone running the CASIO Watches app for world time sync and alarm configuration.
Thermals noise and power draw
The Tough Solar cell charges from any light source, removing the need for battery changes during normal use. No fan, pump or active cooling exists, so the watch runs silently. Power draw is limited to the analog-digital module, double LED Super Illuminator and Bluetooth radio during sync. The 200m water-resistance rating means the sealed case handles swimming and surface water sports without pressure-related leakage.
Highlights
- Solar charging powers the watch from any light source using Tough Solar
- Bluetooth Mobile Link syncs time and settings automatically with a smartphone
- 200 m water resistance suits swimming and surface water sports
- Shock-resistant construction protects the module against impacts and vibration
- Bio-based resin case and strap reduce reliance on fossil-based plastics
Specifications
| Brand | CASIO |
|---|---|
| Style | Sports |
| Material | Resin |
| Movement | Solar |
| Shape | Round |
| Dial Color | Black |
| Dial Markers | Index |
| Display | Analog Digital |
| Date | Date |
| Band Material | Resin |
| Fastener | Buckle Clasp |
| Gender | Male |
| Age | Adult |
| Condition | New |
| Bezel | Fixed Bezel |
| Case Material | Resin |
| Case Thickness | 44.40 mm |
| Crystal | Mineral Crystal |
| Water-Resistant | 200m |
| Special Features | Mineral Crystal,Buckle Clasp,Day and Date Display |
Questions about this item
What comes in the box and what must I buy separately?
The watch ships complete with its bio-based resin strap and buckle clasp already fitted; no extra band or charger is required because the Tough Solar cell charges from any light source.
How do I choose between the listed versions or capacities?
Only the GBM-2100-1A variant is offered — a single 49.8 × 44.4 mm case with 200 m water resistance, 38 world-time cities and a 1/100-second stopwatch.
What does the 200 m water-resistance rating mean in daily use?
It certifies the watch for swimming, snorkelling and surface water sports, but not for scuba diving; the screw-down crown and mineral crystal maintain the seal during normal activity.
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