CASIO
CASIO GA-2100-1A2 G-Shock Analog-Digital Watch Black
Carbon-cased analog-digital sports watch with 200 m water resistance and hand-shift feature for clear digital viewing
- StyleSports
- MaterialCarbon
- MovementQuartz
- ShapeRound
- Dial ColorBlack
- Dial MarkersIndex
- 200 m water resistance suits serious swimming and diving
- Carbon core guard structure keeps the 45.40 mm case light yet tough
- Hand shift feature clears the dial for easy digital reading
- Dual analog-digital display shows 12/24-hour time plus day and date
- Phosphorescent hands stay visible in low-light conditions
Octagonal Carbon Case
The Casio GA-2100-1A2 G-Shock is a men's sports watch built with a carbon case and resin strap. Its round dial combines analog hands with a digital display for dual-format timekeeping. The 45.40 mm case thickness gives a substantial wrist presence without excess bulk. This model suits wearers who want a durable everyday watch with a distinctive octagonal profile.
200m Water Resistance and Quartz Movement
The mineral crystal protects the black dial with index markers and day-date window. Quartz movement drives both the analog hands and digital readout for reliable accuracy. Water resistance to 200 metres supports swimming and surface water sports. The fixed bezel and buckle clasp keep the watch secure during active use.
Hand Shift Feature and Phosphorescent Hands
The hand shift function moves the analog hands away from the digital display for clear reading of 12 or 24-hour format data. Hour and minute hands use phosphorescent paint for visibility in low light. Digital functions show hour, minute, second, month, date and PM indicator. These features serve users who need quick access to both analog and digital information.
Highlights
- 200 m water resistance suits serious swimming and diving
- Carbon core guard structure keeps the 45.40 mm case light yet tough
- Hand shift feature clears the dial for easy digital reading
- Dual analog-digital display shows 12/24-hour time plus day and date
- Phosphorescent hands stay visible in low-light conditions
Specifications
| Brand | CASIO |
|---|---|
| Style | Sports |
| Material | Carbon |
| Movement | Quartz |
| Shape | Round |
| Dial Color | Black |
| Dial Markers | Index |
| Display | Analog and Digital |
| Date | Date |
| Band Material | Resin |
| Fastener | Buckle Clasp |
| Gender | Male |
| Condition | New |
| Bezel | Fixed Bezel |
| Case Material | Carbon |
| Case Thickness | 45.40 mm |
| Crystal | Mineral Crystal |
| Water-Resistant | 200m |
| Special Features | Mineral Crystal,Buckle Clasp,Day and Date Display |
Questions about this item
How do I set the analog hands and digital display on the GA-2100-1A2, and what step is often missed?
Use the crown to set the analog time and the digital buttons for the digital section; the hand shift feature must be activated first so the hands move away from the digital display, a step many users skip.
What parts of the GA-2100-1A2 will need replacement over time?
The resin strap and buckle clasp will wear with daily use, the mineral crystal can scratch and may need polishing or replacement, and the quartz movement will eventually require a battery change by a watchmaker.
What is the first limit reached during continuous water exposure with the GA-2100-1A2?
The 200 m water-resistance rating is the limiting factor; it is suitable for swimming and surface water sports but not for scuba diving or high-pressure water jets.
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