Casio G-Shock Full Metal Solar Bluetooth Chronograph Black IP Steel Watch (GM-B2100BD-1ADR)
Couldn't load pickup availability
- Authorised dealer
- Full manufacturer warranty
- Serviced in-house
- Secure checkout
Description
The Casio G-Shock GM-B2100BD-1ADR represents the pinnacle of the iconic CasiOak lineage, reimagined in full stainless steel with a striking black ion-plated finish. This solar-powered timepiece merges G-Shock's legendary shock-resistant architecture with contemporary smartphone connectivity, delivering a technical instrument that performs as impressively as it presents. The octagonal full-metal case and bracelet construction elevates the classic GA-2100 silhouette into premium territory, while retaining the brand's uncompromising functionality and 200-metre water resistance.
Powered by Tough Solar technology, this watch harnesses light energy to eliminate battery replacement concerns, storing charge for months even in darkness. Smartphone Link functionality via Bluetooth enables automatic time synchronisation, world time access across 300+ cities, and comprehensive timekeeping adjustments directly from your mobile device. The all-black aesthetic extends from the ion-plated stainless steel case and bezel through to the matching bracelet, creating a stealth-mode presence on the wrist that commands attention through its monochromatic refinement rather than overt colour contrast.
At Cassims & Co., we are proud to present this exceptional timepiece from our comprehensive selection of CASIO watches, available both online with nationwide delivery across South Africa and in person at our Mall of the South boutique in Johannesburg. As authorised CASIO retailers, we provide full warranty support and our expert watch servicing and repairs team stands ready to assist with any future maintenance requirements, ensuring your G-Shock performs flawlessly for years to come.
The GM-B2100BD-1ADR measures 49.8mm lug-to-lug by 44.4mm in width, with a slimline 12.8mm case height that wears comfortably despite the substantial 165-gram heft that confirms its full-metal construction. The one-touch three-fold clasp ensures secure wearing while maintaining the clean lines of the integrated bracelet design. This is G-Shock engineered for the enthusiast who demands technical capability without compromise, wrapped in a design language that transitions seamlessly from boardroom to adventure.
Specifications
- Reference Number: GM-B2100BD-1ADR
- Movement: Quartz, Tough Solar (solar-powered)
- Case Diameter: 44.4mm
- Case Length: 49.8mm
- Case Thickness: 12.8mm
- Case Material: Stainless steel with black ion plating
- Bezel Material: Stainless steel with black ion plating
- Crystal: Mineral glass
- Dial Colour: Black
- Bracelet Material: Stainless steel with black ion plating
- Clasp Type: One-touch 3-fold clasp
- Water Resistance: 200 metres (20 bar)
- Shock Resistance: Yes, G-Shock shock-resistant structure
- Power Reserve: Solar-powered, stores charge for extended periods
- Functions: Smartphone Link (Bluetooth connectivity), auto time adjustment, world time (300+ cities), stopwatch, countdown timer, alarm, hand shift feature, full auto-calendar, 12/24-hour format, battery level indicator
- Weight: 165 grams
- Warranty: 1-year international CASIO warranty
- Barcode/GTIN: 4549526327216
FAQ
Q: What does Tough Solar technology mean for battery life?
A: Tough Solar is CASIO's proprietary solar charging system that converts any light source—natural or artificial—into electrical energy. Once fully charged, the GM-B2100BD-1ADR stores power for months even in complete darkness, eliminating the need for battery replacements throughout the watch's operational life.
Q: How does the Smartphone Link function work?
A: Via Bluetooth connectivity to the dedicated G-Shock Connected app (iOS and Android), the watch automatically synchronises time with atomic clock precision, accesses world time for over 300 cities, allows you to adjust settings, and even helps you locate your phone. The connection consumes minimal power thanks to energy-efficient Bluetooth technology.
Q: Is the black finish durable or will it wear off over time?
A: The black finish is ion plating (IP coating) applied to stainless steel, which is significantly more durable than standard paint or PVD coatings. While all surface treatments can show wear with extreme abrasion over years of use, IP coating bonds at a molecular level and is highly resistant to scratching and fading under normal wearing conditions.
Q: Can I wear this watch while swimming or diving?
A: Absolutely. With 200-metre (20 bar) water resistance, the GM-B2100BD-1ADR is suitable for recreational scuba diving, snorkelling, swimming, and water sports. The screw-down caseback and robust sealing ensure water integrity. Avoid operating buttons underwater and rinse with fresh water after exposure to salt or chlorinated water.
Q: What is the hand shift feature?
A: Hand shift is a practical complication that allows you to temporarily move the watch hands out of the way with a button press, enabling you to clearly read digital displays or sub-dials that might otherwise be obscured. The hands automatically return to the correct position, maintaining accurate timekeeping throughout.
Q: How does this Full Metal G-Shock compare in size to the standard resin GA-2100?
A: The GM-B2100BD shares identical case dimensions (49.8 × 44.4 × 12.8mm) with the resin GA-2100 series, maintaining the compact CasiOak profile. However, at 165 grams, it weighs considerably more due to the full stainless steel construction versus the resin model's approximate 50-gram weight. The metal version delivers substantial wrist presence while remaining comfortable for all-day wear.
Q: Is the bracelet adjustable and can links be removed?
A: Yes, the stainless steel bracelet features removable links for precise sizing. Our team at Cassims & Co. provides complimentary bracelet adjustment at the time of purchase, ensuring a perfect fit. The one-touch three-fold clasp also incorporates micro-adjustment holes for fine-tuning without removing links.
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.
- Exclusions: The warranty does not cover normal wear and tear, scratches or cosmetic damage to the case, bracelet, or crystal, damage caused by accidents, misuse, or improper handling, water damage resulting from improper use or failure to observe water resistance guidelines, damage from unauthorised repairs or modifications, or consumable components such as the rechargeable battery (solar cell).
- Warranty Service: For warranty claims, present your original proof of purchase along with the watch to Cassims & Co. or an authorised CASIO service centre. We will assess the issue and facilitate repair or replacement as per CASIO's warranty terms.
- After-Warranty Support: Beyond the warranty period, Cassims & Co. offers ongoing servicing, technical support, and access to genuine CASIO parts and qualified technicians.
Care guide
- Daily Wearing: Avoid impacts to the crystal and bezel, though the shock-resistant structure protects the movement from everyday knocks.
- Water Exposure: Rinse with fresh water after exposure to salt water, chlorine, or chemicals. Dry thoroughly with a soft cloth, paying attention to bracelet links where moisture can accumulate.
- Bracelet Maintenance: Periodically clean the stainless steel bracelet with a soft brush, mild soap, and warm water to remove dirt, sweat, and oils that accumulate between links. Dry completely to prevent water spots on the black IP finish.
- Solar Charging: Expose the dial to bright light regularly (natural sunlight or strong artificial light) to maintain optimal charge. Even though Tough Solar stores energy for months, periodic charging ensures all functions remain active.
- Bluetooth Connection: Keep the G-Shock Connected app updated on your smartphone for optimal performance and access to the latest features.
- Button Operation: Do not press buttons while the watch is wet or submerged, as this can compromise water resistance.
- Storage: When not wearing the watch for extended periods, store in a cool, dry location away from direct sunlight. Ensure it receives light exposure every few months to maintain solar charge.
- Magnetic Fields: While quartz movements are less susceptible than mechanical calibres, avoid prolonged exposure to strong magnetic fields (speakers, magnetic clasps, industrial equipment) which can temporarily affect timekeeping accuracy.
- Chemical Exposure: Avoid contact with solvents, detergents, perfumes, cosmetics, and harsh chemicals that may damage the black ion plating or gaskets.
- Professional Service: If water resistance testing or gasket replacement is needed after several years of use, visit Cassims & Co. or an authorised CASIO service centre to maintain the watch's integrity.
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.
Secure checkout with
Also accepted: Instant EFT, SnapScan, Zapper, Scan to Pay, Payflex, Mobicred and RCS Store Card
Notify me when back in stock
No one has reviewed this piece yet. Here is what customers say about Cassims & Co. — our watchmakers, our jewellers and our service.
Read customer reviews