Casio G-Shock GA-2100RL-1A Analog-Digital Black Carbon Core Guard Watch (GA-2100RL-1ADR)
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- R 2,899
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The Casio G-Shock GA-2100RL-1A represents the evolution of G-Shock's iconic "CasiOak" design philosophy, blending the brand's signature shock resistance with a sleek, octagonal case profile that has redefined modern tool watch aesthetics. This analog-digital timepiece features a distinctive black matte finish with strategic touches of G-Shock red accents across the dial, creating a faithful homage to the original 1983 G-Shock colour scheme while incorporating contemporary Carbon Core Guard construction for exceptional durability and lightness.
Measuring 48.5mm across with an ultra-slim 11.8mm profile, this watch delivers substantial wrist presence without the bulk traditionally associated with shock-resistant timepieces. The Carbon Core Guard structure integrates a carbon fibre-reinforced case that protects the module from impact while reducing overall weight to just 51 grams. The bio-based resin case, bezel, and band demonstrate Casio's commitment to sustainable materials without compromising the legendary G-Shock toughness, and the 200-metre water resistance ensures reliable performance whether you're desk diving or actually exploring underwater environments.
At Cassim & Co., we are proud to be an authorised retailer for Casio, ensuring that every G-Shock timepiece we offer comes with full manufacturer warranty protection and genuine authentication. The GA-2100RL-1A's dual-display configuration combines traditional analog hands with a digital sub-dial providing instant access to multiple time zones, alarms, stopwatch functionality, and calendar information—making this watch equally at home in the boardroom or on adventure. The analog hands feature luminous coating for low-light legibility, while the digital display offers crisp visibility in all lighting conditions.
Whether you're drawn to the technical prowess of G-Shock's engineering or the minimalist design language that has made the 2100 series a contemporary icon, this timepiece delivers on both fronts. Browse our full range of CASIO watches to explore the complete G-Shock collection, and visit us at our Mall of the South boutique to experience the GA-2100RL-1A in person, where our specialist team can discuss sizing, functionality, and how this watch integrates into your lifestyle. Our watch servicing and repairs team provides comprehensive after-sales support including battery replacements and strap adjustments, ensuring your G-Shock maintains peak performance for years to come.
Specifications
- Reference Number: GA-2100RL-1ADR
- Brand: Casio
- Collection: G-Shock 2100 Series
- Movement: Quartz (analog-digital module)
- Case Diameter: 48.5mm
- Case Thickness: 11.8mm
- Case Width: 45.4mm
- Case Material: Carbon Core Guard structure with bio-based resin
- Bezel Material: Bio-based resin
- Dial Colour: Black with red accents
- Crystal: Mineral glass
- Strap/Bracelet: Bio-based resin band
- Water Resistance: 200 metres (20 ATM)
- Functions: Analog timekeeping, digital display, world time, stopwatch, countdown timer, alarm, calendar, LED backlight
- Weight: 51 grams
- Power Source: Battery (SR726W × 2)
- Battery Life: Approximately 3 years
- Shock Resistance: Yes (Carbon Core Guard structure)
- Special Features: Octagonal bezel design, luminous hands, mute function
FAQ
Q: What is the Carbon Core Guard structure in this G-Shock?
A: Carbon Core Guard is Casio's advanced protective architecture that incorporates a carbon fibre-reinforced case guard to protect the internal module from shock and impact. This construction provides exceptional durability while significantly reducing the watch's overall weight compared to traditional resin-only G-Shock models, delivering the best of both protection and wearing comfort.
Q: Is the GA-2100RL-1A suitable for swimming and water sports?
A: Absolutely. With 200-metre water resistance (20 ATM), this G-Shock is fully capable of handling swimming, snorkelling, and recreational diving. The shock-resistant construction and sealed case ensure reliable performance in wet environments, though the watch should not be operated underwater and is not suitable for professional diving or high-pressure water activities.
Q: How does the analog-digital display work on this model?
A: The GA-2100RL-1A features a hybrid display with traditional analog hands for primary timekeeping and a digital LCD sub-dial at the lower portion of the dial. The analog hands show hours, minutes, and seconds, while the digital display provides additional functions including world time, alarms, stopwatch, countdown timer, and full calendar. You can toggle between functions using the side pushers.
Q: What are bio-based resin materials, and why does Casio use them?
A: Bio-based resin is a sustainable material derived from renewable plant sources rather than petroleum-based plastics. Casio incorporates bio-based resin in the case, bezel, and band of the GA-2100RL-1A as part of their environmental commitment, reducing the watch's carbon footprint without compromising the legendary durability and chemical resistance that G-Shock is known for.
Q: How often will I need to replace the battery?
A: The GA-2100RL-1A is powered by two SR726W batteries with an approximate lifespan of 3 years under normal use. Battery life depends on usage patterns, particularly the frequency of LED backlight activation and alarm functions. When replacement is needed, our authorised service centre can install genuine Casio batteries and perform a water resistance check to maintain the watch's integrity.
Q: Can the resin strap be replaced if it wears out?
A: Yes, the bio-based resin strap is replaceable. As an authorised Casio retailer, Cassim & Co. can order genuine replacement straps directly from Casio to ensure perfect fit and material authenticity. Resin straps are highly durable and resistant to UV degradation, but over years of heavy wear, replacement may be desired for aesthetic or comfort reasons.
Q: Why is this model called the "CasiOak"?
A: The GA-2100 series earned the nickname "CasiOak" from watch enthusiasts due to its octagonal bezel design, which bears a resemblance to the iconic Audemars Piguet Royal Oak luxury sports watch. The slim profile and integrated strap design further contributed to this affectionate moniker, making the GA-2100 one of the most popular and sought-after G-Shock designs in recent years.
Warranty
- Manufacturer Warranty: This Casio G-Shock GA-2100RL-1A carries a 1-year international Casio warranty from the date of purchase when purchased from an authorised retailer.
- Coverage: The warranty covers manufacturing defects in materials and workmanship under normal use conditions. This includes defects in the case, movement, hands, and factory-fitted components.
- Exclusions: The warranty does not cover normal wear and tear, scratches or cosmetic damage to the case or band, battery depletion or replacement, water damage resulting from misuse or failure to observe water resistance precautions, damage caused by accidents, impacts beyond normal shock resistance specifications, unauthorised repairs or modifications, or damage from improper use.
- Authorised Retailer Requirement: Warranty coverage is only valid when the watch is purchased from an authorised Casio retailer such as Cassim & Co. Purchases from unauthorised dealers, grey market sources, or private sellers are not covered under the manufacturer warranty.
- Service Process: Should you require warranty service, contact Cassim & Co. with your proof of purchase. We will facilitate the warranty claim process with Casio's authorised service centre. Warranty service is performed exclusively by Casio-authorised technicians using genuine parts.
- Battery Replacement: Battery replacement is considered routine maintenance and is not covered under warranty. However, the first battery installed at the factory is designed to last approximately 3 years, and subsequent replacements are the owner's responsibility.
- Water Resistance Maintenance: Water resistance is not a permanent condition and may diminish over time due to aging of gaskets and seals. Regular water resistance testing during battery replacement is recommended but is not covered under the manufacturer warranty.
Care Guide
- Daily Wear: The GA-2100RL-1A is designed for daily wear and can withstand normal shocks and impacts. However, avoid extreme impacts such as dropping the watch onto hard surfaces from significant heights.
- Water Exposure: While water-resistant to 200 metres, rinse the watch with fresh water after exposure to salt water or chlorinated pool water to prevent residue buildup. Dry thoroughly with a soft cloth.
- Cleaning: Clean the resin case and band regularly with a soft, damp cloth. For stubborn dirt, use a mild soap solution and a soft-bristled brush, then rinse and dry completely. Avoid harsh chemicals, solvents, or abrasive cleaners that may damage the bio-based resin finish.
- Crown and Pushers: Do not operate the pushers or adjust functions while the watch is wet or underwater, as this may compromise water resistance. Ensure all pushers are in their normal position and not pressed in when exposed to water.
- Battery Replacement: When the digital display dims or functions become sluggish, the battery requires replacement. Always have batteries replaced by an authorised service centre to ensure proper installation and water resistance testing.
- Storage: When not wearing the watch, store it in a cool, dry place away from direct sunlight, extreme temperatures, and magnetic fields. Prolonged exposure to UV light may cause gradual fading of the resin components over many years.
- Chemical Exposure: Avoid contact with solvents, perfumes, cosmetics, and cleaning agents, as these substances may discolour, damage, or deteriorate the resin case and band materials.
- Temperature Extremes: While G-Shock watches are built to withstand harsh conditions, avoid prolonged exposure to extreme heat (above 60°C) or extreme cold (below -10°C), as this may affect battery performance and resin flexibility.
- Shock Resistance: The Carbon Core Guard structure provides exceptional shock protection, but the watch is not indestructible. Avoid deliberate impacts and do not subject the watch to pressure testing or extreme stress beyond its design specifications.