Casio G-Shock GA-2100-1A1 Quartz Analogue-Digital Black Resin Watch (GA-2100-1A1DR)
- Sale price
- R 2,549
- List price
- R 3,399
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The Casio G-Shock GA-2100-1A1DR represents a bold evolution in the iconic G-Shock lineage, combining the legendary shock-resistant durability that has defined the collection for decades with a sleek, contemporary aesthetic. Known affectionately as the "CasiOak" for its octagonal bezel silhouette, this all-black monochrome timepiece delivers an unmistakably modern profile while maintaining the rugged functionality that serious watch enthusiasts demand. At just 11.8mm in case thickness, this is one of the slimmest G-Shock models ever produced, making it exceptionally comfortable for daily wear without compromising the 200-metre water resistance and Carbon Core Guard structure that protect the module within.
The GA-2100-1A1DR features an analogue-digital hybrid display configuration, marrying traditional watch aesthetics with digital functionality. The matte black dial, hands, and indices create a stealthy, tactical appearance that pairs effortlessly with both casual and smart-casual attire. The carbon-reinforced resin case and matching resin strap ensure extreme durability while keeping the total weight to a mere 51 grams—light enough to forget you're wearing it, yet tough enough to withstand the harshest conditions. This model is powered by a reliable quartz movement with an approximate three-year battery life on dual SR726W cells, ensuring long-term dependability with minimal maintenance.
At Cassims & Co., we are proud to be an authorised retailer for CASIO watches, offering you complete peace of mind with every purchase. This GA-2100-1A1DR comes with a full one-year international Casio warranty, valid from the date of purchase, covering manufacturing defects in materials and workmanship. Beyond the warranty period, our watch servicing and repairs team is always available to assist with battery replacements, strap adjustments, and general maintenance to keep your G-Shock performing at its best.
Whether you're an urban professional seeking a discreet yet capable everyday watch, an outdoor enthusiast requiring reliable timekeeping in extreme conditions, or a collector appreciating the design innovation within the G-Shock family, the GA-2100-1A1DR delivers on all fronts. Its minimalist black-on-black colourway ensures versatility, while the comprehensive suite of functions—including world time, stopwatch, countdown timer, and daily alarm—provide practical utility for modern life. Visit us at our Mall of the South boutique in Johannesburg to experience the GA-2100-1A1DR firsthand, or take advantage of our nationwide delivery service to have this exceptional timepiece delivered securely to your door anywhere in South Africa.
Specifications
- Brand: Casio
- Collection: G-Shock
- Model: GA-2100-1A1DR
- Reference Number: GA-2100-1A1
- Movement: Quartz (analogue-digital hybrid)
- Battery Life: Approximately 3 years (SR726W x 2)
- Case Dimensions: 48.5mm (L) × 45.4mm (W) × 11.8mm (H)
- Case Material: Carbon-reinforced resin
- Case Shape: Octagonal
- Bezel Material: Resin
- Crystal: Mineral glass
- Dial Colour: Black
- Hands: Analogue hands (black)
- Display Type: Analogue-digital combination
- Strap Material: Resin
- Strap Colour: Black
- Compatible Band Size: 145mm to 215mm wrist circumference
- Clasp Type: Standard tang buckle
- Water Resistance: 200 metres (20 ATM)
- Shock Resistance: Yes (Carbon Core Guard structure)
- Weight: 51 grams
- Functions: World time, stopwatch, countdown timer, daily alarm, 12/24-hour format, auto calendar
- Barcode/GTIN: 4549526241642
- SKU: CO93
- Warranty: 1-year international Casio warranty
- Price: R2,549.00 ZAR
FAQ
Q: What is the "CasiOak" nickname referring to?
A: The GA-2100 series has earned the affectionate nickname "CasiOak" due to its octagonal bezel design, which shares aesthetic similarities with the iconic Royal Oak luxury sports watch silhouette. It represents Casio's design evolution toward a slimmer, more refined G-Shock profile while maintaining full shock resistance.
Q: How slim is this G-Shock compared to traditional models?
A: At just 11.8mm in thickness, the GA-2100-1A1DR is one of the slimmest G-Shock models ever produced. This is significantly thinner than classic G-Shock models, which typically range from 13mm to 16mm or more, making it exceptionally comfortable for everyday wear and allowing it to slip easily under shirt cuffs.
Q: Is the GA-2100-1A1DR suitable for swimming and diving?
A: Yes, with 200-metre water resistance (20 ATM), this watch is suitable for recreational swimming, snorkelling, and water sports. It can withstand significant water pressure, though it is not a dedicated dive computer and lacks features such as a rotating bezel or depth gauge found on professional dive watches.
Q: How long will the battery last, and what type does it use?
A: The GA-2100-1A1DR has an approximate battery life of three years under normal use. It requires two SR726W batteries. When replacement is needed, we recommend having the battery changed by an authorized service centre to maintain water resistance integrity and warranty coverage.
Q: What is the Carbon Core Guard structure?
A: The Carbon Core Guard is Casio's advanced protective architecture that uses a carbon-reinforced case structure to protect the internal module from impact and shock. This technology allows for a slimmer case profile without compromising the legendary shock resistance that defines the G-Shock collection.
Q: Can I wear this watch with formal or business attire?
A: While the GA-2100-1A1DR is a sports watch at its core, its slim profile, octagonal design, and monochrome black aesthetic make it one of the most versatile G-Shock models for pairing with smart-casual and even semi-formal attire. The all-black colourway is particularly discreet and stylish.
Q: What functions are included beyond basic timekeeping?
A: The GA-2100-1A1DR includes world time for 31 time zones, a 1/100-second stopwatch, a countdown timer, five daily alarms (with one snooze alarm), an hourly time signal, full auto calendar, and both 12-hour and 24-hour time format display options—all accessible via the digital sub-dial.
Warranty
- Warranty Period: This Casio G-Shock GA-2100-1A1DR carries a 1-year international Casio warranty from the date of purchase when purchased from an authorised retailer such as Cassims & Co.
- Coverage: The warranty covers manufacturing defects in materials and workmanship, including defects in the case, movement module, and original components as supplied by Casio.
- Exclusions: The warranty does not cover normal wear and tear, cosmetic damage (scratches, scuffs, discolouration), battery depletion or replacement, damage caused by accidents, misuse, improper handling, unauthorized modifications or repairs, water damage resulting from improper use or failure to maintain water resistance seals, or damage from exposure to chemicals or extreme conditions.
- Validity: The warranty is valid only when the watch is purchased from an authorised Casio retailer and is accompanied by the original proof of purchase and completed warranty card. Cassims & Co. is a fully authorised Casio retailer in South Africa.
- Claim Process: Should you need to make a warranty claim, please contact Cassims & Co. with your proof of purchase and a description of the defect. We will assess the issue and facilitate warranty service through Casio's authorised service network.
- After-Warranty Support: Even after the warranty period expires, Cassims & Co. offers ongoing support for battery replacements, strap replacements, and general servicing to keep your G-Shock in optimal condition for years to come.
Care Guide
- Regular Cleaning: Wipe the case, bezel, and resin strap regularly with a soft, slightly damp cloth to remove sweat, dirt, and oils. For deeper cleaning, use lukewarm water and mild soap, then dry thoroughly with a lint-free cloth.
- Water Resistance Maintenance: Although this watch is water-resistant to 200 metres, avoid operating the buttons underwater and ensure the crown (if present) is in the normal position during water exposure. Have the water resistance tested annually if you frequently use the watch in aquatic environments.
- Avoid Extreme Temperatures: Do not expose the watch to extreme heat (such as saunas or direct prolonged sunlight in hot cars) or extreme cold, as temperature extremes can affect battery life, resin integrity, and module performance.
- Impact Protection: While the Carbon Core Guard structure provides excellent shock resistance, avoid unnecessary impacts against hard surfaces. Remove the watch during activities involving heavy machinery or high-impact sports where excessive force could be applied.
- Strap Care: The resin strap is durable but can degrade over time with UV exposure and wear. Avoid prolonged exposure to direct sunlight when not wearing the watch. If the strap shows signs of cracking or brittleness, have it replaced promptly to prevent breakage.
- Battery Replacement: When the digital display dims or functions become sluggish, the battery requires replacement. Always have batteries replaced by an authorised Casio service centre to ensure proper resealing and maintenance of water resistance.
- Storage: When not in use, store your G-Shock in a cool, dry place away from direct sunlight, magnetic fields, and chemicals such as solvents, perfumes, or cleaning agents that could damage the resin materials.
- Professional Servicing: For any technical issues, module malfunctions, or physical damage, contact our watch servicing team at Cassims & Co. rather than attempting repairs yourself, as improper handling can void your warranty.