CASIO
CASIO G-Shock GM-B2100AD-5A 44.40 mm copper dial solar watch 200 m
Solar-powered analog-digital watch with a copper dial, stainless-steel case and bracelet, and 200 m water resistance
- StyleSports
- MaterialStainless Steel
- MovementSolar
- ShapeRound
- Dial ColorCopper
- Dial MarkersIndex
- Solar charging keeps the watch running without battery changes
- 200 m water resistance suits swimming and surface diving
- Stainless steel case and bracelet resist daily impacts
- Analog-digital display shows month, day and date at a glance
- Copper dial adds distinctive colour to the 44.40 mm case
Stainless-steel solar watch
The Casio G-Shock GM-B2100AD-5A combines a full stainless-steel case and bracelet with a copper dial. Tough Solar movement keeps the analog-digital display running without regular battery changes. Shock-resistant construction and 200 m water resistance suit daily wear and swimming. The deployment clasp secures the metal bracelet on the wrist.
Thermals noise and power draw in normal use
Solar charging eliminates the need for disposable cells, so the watch draws no external power in daily use. The sealed stainless-steel case and mineral crystal produce no audible noise. Temperature stability is handled by the standard G-Shock module inside the 44.40 mm case. No active cooling or power management is required.
Smartphone Link and bundled features
Smartphone Link connects the watch to a companion app for automatic time correction and alarm management. The analog-digital display shows month, day and date alongside the hands. Mineral crystal protects the copper dial from scratches. The fixed bezel and deployment clasp complete the supplied feature set without extra accessories.
Highlights
- Solar charging keeps the watch running without battery changes
- 200 m water resistance suits swimming and surface diving
- Stainless steel case and bracelet resist daily impacts
- Analog-digital display shows month, day and date at a glance
- Copper dial adds distinctive colour to the 44.40 mm case
Specifications
| Brand | CASIO |
|---|---|
| Style | Sports |
| Material | Stainless Steel |
| Movement | Solar |
| Shape | Round |
| Dial Color | Copper |
| Dial Markers | Index |
| Display | Analog Digital |
| Date | Date |
| Band Material | Stainless Steel |
| Fastener | Deployment Clasp |
| Gender | Male |
| Condition | New |
| Bezel | Fixed Bezel |
| Case Material | Stainless Steel |
| Case Thickness | 44.40 mm |
| Crystal | Mineral Crystal |
| Water-Resistant | 200m |
| Special Features | Mineral Crystal,Deployment Clasp,Month, Day And Date Display |
Questions about this item
How do I pair the GM-B2100AD-5A with my phone for time sync and what step is often missed?
Install the CASIO Watches app, enable Bluetooth on the phone, then hold the watch's lower-left button until the Bluetooth icon flashes; the step often missed is granting the app location permission, which is required for the pairing handshake to complete.
What maintenance will the solar movement and 200 m seal need over time?
The Tough Solar cell recharges from any light; keep the dial exposed regularly. Have the water-resistance seals pressure-tested and the gaskets replaced every two to three years to maintain the 200 m rating.
At what point does the 44.40 mm case thickness become the limiting factor during all-day wear?
The 44.40 mm thickness sits higher on the wrist than slimmer models, so it contacts cuffs and desk edges first; this physical clearance issue appears before weight or battery life becomes noticeable.
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