Casio G-Shock Carbon Core GA-B2100BNR-1ADR Tough Solar Bluetooth Black & Red Ana-Digi Watch
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- Authorised dealer
- Full manufacturer warranty
- Serviced in-house
- Secure checkout
Description
The Casio G-Shock Carbon Core GA-B2100BNR-1ADR represents the next evolution of the iconic octagonal "CasiOak" design, combining Tough Solar power, Bluetooth connectivity, and the unmistakable toughness that has defined G-Shock for decades. This striking timepiece features a bold black carbon-reinforced resin case paired with vivid red accents on the dial and "G-SHOCK" branding, creating a dynamic aesthetic that commands attention whether you're training, travelling, or navigating the urban jungle.
At the heart of this watch is Casio's Tough Solar technology, which converts any light source into energy, ensuring your watch remains powered without the need for regular battery replacements. The integrated Bluetooth functionality seamlessly connects to your smartphone via the G-SHOCK Connected app, enabling automatic time adjustment across time zones, world time access to over 300 cities, and additional features that enhance the watch's already impressive utility. The carbon core guard structure provides exceptional shock resistance while keeping the overall weight remarkably light at just 52 grams, making this one of the most comfortable G-Shocks you'll ever wear.
Built to withstand the demands of an active lifestyle, the GA-B2100BNR-1ADR offers 200-metre water resistance, a Super Illuminator LED light for low-light visibility, and a host of functions including world time, stopwatch, countdown timer, and five daily alarms. The dual analogue-digital display provides instant access to multiple time zones and functions simultaneously, while the mineral glass crystal ensures durability against scratches and impacts. Whether you're exploring the great outdoors or simply appreciate cutting-edge horology in a compact package, this G-Shock delivers performance and style in equal measure.
At Cassim & Co., we are proud to offer the complete range of CASIO watches as authorised retailers, ensuring every timepiece comes with full manufacturer warranty and after-sales support. Visit us at our Mall of the South boutique to experience the GA-B2100BNR-1ADR in person, or take advantage of our nationwide delivery service across South Africa. Our experienced team and dedicated watch servicing and repairs department ensure your G-Shock receives expert care throughout its lifetime.
Specifications
- Reference Number: GA-B2100BNR-1ADR
- Brand: Casio G-Shock
- Collection: Carbon Core Guard
- Movement: Quartz (Module 5689)
- Power Source: Tough Solar (Rechargeable Battery CTL920)
- Display Type: Analogue-Digital Combination
- Case Dimensions: 48.5mm (L) × 45.4mm (W) × 11.9mm (H)
- Case Material: Carbon-Reinforced Resin
- Bezel Material: Carbon / Resin
- Case Shape: Octagonal
- Dial Colour: Black with Red Accents
- Crystal: Mineral Glass
- Strap Material: Resin
- Strap Colour: Black
- Water Resistance: 200 metres (20 ATM)
- Shock Resistance: Yes
- Illumination: Super Illuminator LED Light
- Bluetooth Connectivity: Yes (Smartphone Link)
- World Time: 38 time zones, 38 cities
- Stopwatch: 1/100-second, 24-hour capacity
- Countdown Timer: 24 hours
- Alarms: 5 daily alarms
- Auto Calendar: Pre-programmed to year 2099
- Accuracy: ±15 seconds per month (without smartphone connection)
- Weight: 52 grams
- GTIN/Barcode: 4549526340147
FAQ
Q: How does the Tough Solar charging system work?
A: The GA-B2100BNR-1ADR features Casio's Tough Solar technology, which uses a solar panel beneath the dial to convert any light source—sunlight, fluorescent, or LED—into electrical energy. This charges the internal rechargeable battery (CTL920), eliminating the need for regular battery replacements. The watch will continue to run for several months even in complete darkness once fully charged, and the battery is designed to last for years with normal exposure to light.
Q: What functions are available through the Bluetooth smartphone connection?
A: When connected to the G-SHOCK Connected app on your smartphone, the watch automatically adjusts to the correct time based on your location, provides access to world time for over 300 cities, allows you to set alarms and timers from your phone, and helps you locate your phone using the watch's button. The connection also enables easy switching between home and world time zones.
Q: Is this watch suitable for swimming and water sports?
A: Absolutely. With 200-metre water resistance, the GA-B2100BNR-1ADR is suitable for recreational diving, swimming, snorkelling, and water sports. However, it is not designed for technical diving or saturation diving. Always ensure the crown is properly secured before entering water.
Q: What is the Carbon Core Guard structure?
A: The Carbon Core Guard is Casio's advanced case construction that incorporates fine carbon fibre reinforcement into the resin case material. This creates an exceptionally strong yet lightweight structure that provides superior shock resistance while reducing overall weight. The carbon composite protects the module from impacts in all directions, maintaining G-Shock's legendary toughness in a slimmer profile.
Q: How do I switch between analogue time and digital displays?
A: The GA-B2100BNR-1ADR features a combination analogue-digital display that shows both formats simultaneously. The analogue hands display the primary time, while the digital LCD can be toggled to show different functions such as date, world time, stopwatch, or timer using the mode button. Both displays are always visible, giving you maximum information at a glance.
Q: Can the strap be replaced or adjusted?
A: Yes, the resin strap features multiple adjustment holes to fit a wide range of wrist sizes. While the strap is integrated into the case design typical of G-Shock watches, it can be replaced with genuine Casio replacement straps if needed. We recommend visiting our boutique for professional strap fitting and adjustments to ensure proper sizing and comfort.
Q: Does this watch come with the international Casio warranty?
A: Yes, when purchased from authorised retailers like Cassims & Co., the GA-B2100BNR-1ADR comes with a full 1-year international Casio warranty covering manufacturing defects in materials and workmanship. The warranty is valid from the date of purchase and requires proof of purchase from an authorised dealer.
Warranty
- Warranty Period: This watch carries a 1-year international Casio warranty from the date of purchase.
- Warranty Validity: The warranty is valid only when the watch is purchased from an authorised Casio retailer such as Cassims & Co.
- Coverage: The warranty covers manufacturing defects in materials and workmanship under normal use conditions.
- What Is NOT Covered: The warranty does not cover normal wear and tear, scratches or cosmetic damage to the case/crystal/strap, battery depletion or replacement, water damage resulting from misuse or failure to observe water resistance guidelines, damage from accidents or impacts, unauthorised repairs or modifications, or damage from extreme conditions.
- Proof of Purchase Required: A valid proof of purchase from an authorised retailer must be presented for any warranty claims.
- Service Procedure: For warranty service or repairs, contact Cassims & Co. directly. We will coordinate with Casio South Africa to ensure your watch receives authorised service using genuine Casio parts.
- After-Warranty Support: Even after the warranty period expires, Cassims & Co. provides ongoing support including battery services, strap replacements, and general maintenance for all Casio watches purchased from us.
Care guide
- Regular Cleaning: Wipe the case, bezel, and resin strap regularly with a soft, lint-free cloth. For deeper cleaning, use mild soap and lukewarm water, then dry thoroughly with a soft cloth.
- Solar Charging: Expose the watch to bright light regularly to maintain optimal charge. Avoid storing the watch in complete darkness for extended periods. A fully charged battery will power the watch for several months without additional light exposure.
- Water Resistance Maintenance: While the watch is water-resistant to 200 metres, avoid operating the buttons underwater as this may compromise water resistance. After exposure to saltwater, rinse the watch with fresh water and dry thoroughly.
- Bluetooth Connection: Keep the G-SHOCK Connected app updated on your smartphone for optimal Bluetooth performance. If connection issues occur, restart both the watch and your phone, and ensure Bluetooth is enabled.
- Impact Protection: Although designed for shock resistance, avoid subjecting the watch to extreme impacts or dropping it onto hard surfaces. The carbon core structure is highly durable, but excessive force may still cause damage.
- Temperature Considerations: Avoid exposing the watch to extreme temperatures (below -10°C or above 60°C), as this may affect accuracy and battery performance. Remove the watch before entering saunas or hot tubs.
- Magnetic Fields: Keep the watch away from strong magnetic fields generated by speakers, magnetic clasps, or electronic devices, as these may temporarily affect accuracy.
- Storage: When not wearing the watch for extended periods, store it in a cool, dry place with occasional exposure to light to maintain solar charging. Avoid storing in sealed containers for months at a time.
- Professional Servicing: If you notice decreased accuracy, display issues, or the battery level indicator shows low charge despite regular light exposure, bring the watch to our boutique for professional assessment and servicing.
Why buy from Cassims & Co.?
Authorised. Authentic. Serviced here.
Authorised retailer
Every watch we sell comes from the brand or its official South African distributor, with the manufacturer's warranty registered to you. No grey imports, no parallel stock.
Set up before it leaves
Bracelet sized to your wrist, date and time set, warranty card stamped, in store or before dispatch.
In-house watchmakers
Battery changes, bracelet links, pressure tests and full services at our own Johannesburg service centre, so your warranty service never leaves the city.
Price-beat promise
Find the identical model in stock at a lower listed price from another authorised SA retailer and we'll match it.
Nationwide delivery
Tracked courier anywhere in South Africa, free over R3,000. Or collect at Mall of the South or Greenstone.
Delivery & returns
Tracked courier delivery across South Africa in 1–3 working days; free on orders over R3,000. Collect in store at Mall of the South or Greenstone Shopping Centre at no charge.
See our shipping policy and refund policy for full details.
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