Casio G-Shock GA-100-1A1DR Quartz Ana-Digi Chronograph Black Resin Watch
- Sale price
- R 1,874
- List price
- R 2,499
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The Casio G-Shock GA-100-1A1DR represents the pinnacle of tactical durability and functional design. This ana-digi combination model merges analogue hands with digital sub-displays, encased entirely in matte black resin for a bold, all-stealth aesthetic. The multi-layered dial architecture showcases G-Shock's signature shock-resistant construction, magnetic resistance to JIS class-1 standards, and 200-metre water resistance—engineered for those who demand resilience in the field and precision in every second.
At the heart of this timepiece is a quartz module 5081 powering a comprehensive suite of complications: a 1/1000-second stopwatch with split-time measurement, 60-second analogue sub-dial, speed indicator, countdown timer, and five daily alarms. The LED backlight illuminates the entire face with afterglow, ensuring legibility in low-light conditions. The robust 55mm case, paired with the textured resin band, delivers exceptional comfort and durability for training, competition, or everyday wear.
At Cassims & Co., we are proud to be an authorised retailer for CASIO watches, offering the full G-Shock range with genuine manufacturer warranties and after-sales support. Whether you're seeking tactical reliability, sports functionality, or simply bold design, the GA-100-1A1DR delivers without compromise. Visit us at our Mall of the South boutique in Johannesburg to experience this icon in person, or take advantage of our nationwide delivery service across South Africa. Our watch servicing and repairs team stands ready to provide battery replacements, sizing adjustments, and ongoing care for your G-Shock investment.
Specifications
- Reference: GA-100-1A1DR
- Movement: Quartz (Module 5081)
- Functions: Ana-digi display, 1/1000-second stopwatch, speed indicator, countdown timer, 5 daily alarms, LED backlight with afterglow
- Case Size: 55 × 51.2 × 16.9 mm (L × W × H)
- Case Material: Shock-resistant resin
- Bezel Material: Resin
- Dial Colour: Black with white accents
- Crystal: Mineral glass
- Strap Material: Resin band
- Water Resistance: 200 metres (20 bar)
- Magnetic Resistance: JIS class-1
- Weight: 70 grams
- Power Supply: CR1220 battery (approx. 2 years battery life)
- Additional Features: Shock resistant construction, auto calendar, 12/24-hour format, button operation tone on/off
FAQ
Q: Is the GA-100-1A1DR suitable for swimming and diving?
A: Yes, this G-Shock is rated to 200 metres water resistance, making it suitable for recreational swimming, snorkelling, and water sports. It is not designed for saturation diving or professional use with breathing apparatus.
Q: How long does the battery last and where can I get it replaced?
A: The CR1220 battery provides approximately 2 years of operation under normal use. You can have it replaced at Cassims & Co. in Mall of the South, or at any authorised Casio service centre to maintain your warranty coverage.
Q: What does the speed indicator function measure?
A: The speed indicator calculates and displays current speed based on elapsed time over a measured distance. It's ideal for running, cycling, and other athletic training where pace monitoring is essential.
Q: Can the analogue and digital displays show different time zones?
A: No, the GA-100-1A1DR displays a single time zone across both analogue and digital elements. The digital display can show additional data such as stopwatch readings, timer, and alarm settings while the analogue hands indicate current time.
Q: Is this watch magnetic-resistant?
A: Yes, the GA-100-1A1DR meets JIS class-1 magnetic resistance standards, protecting the quartz movement from interference by everyday magnetic fields such as those from speakers, mobile devices, and magnetic clasps.
Q: How do I activate the LED backlight?
A: Press the illumination button (typically at 3 o'clock position) to activate the LED backlight, which illuminates the entire dial face with an afterglow that persists for approximately 1.5 seconds for easy night-time reading.
Q: What is the stopwatch accuracy on this model?
A: The stopwatch measures elapsed time with 1/1000-second precision up to 100 hours, with split-time and cumulative timing modes. It features a dedicated 60-second analogue sub-dial for enhanced readability during athletic events.
Warranty
- This watch is covered by a 1-year international Casio warranty from the date of purchase when bought from an authorised retailer such as Cassims & Co.
- The warranty covers manufacturing defects in materials and workmanship under normal use conditions.
- The warranty does not cover normal wear and tear, scratches, aesthetic deterioration of resin components, battery replacement, or damage resulting from accidents, misuse, or unauthorised repairs.
- Water damage resulting from improper use (such as operating pushers underwater or exceeding the stated water resistance rating) is not covered.
- To make a warranty claim, retain your original proof of purchase and contact Cassims & Co. or an authorised Casio service centre.
- Warranty service may require the watch to be sent to an authorised repair facility; turnaround times vary depending on parts availability and service location.
- The warranty is non-transferable and valid only when the watch is purchased new from an authorised Casio retailer.
Care Guide
- Rinse the watch with fresh water after exposure to saltwater, chlorine, or sweat to prevent residue buildup on the resin case and band.
- Dry thoroughly with a soft, lint-free cloth, paying attention to recessed areas around pushers and case back.
- Avoid exposure to solvents, detergents, cosmetics, and chemicals which may discolour or degrade the resin material.
- Do not operate pushers or crown while the watch is wet or submerged to prevent water ingress.
- Store in a cool, dry location away from direct sunlight when not in use to preserve resin finish and prevent fading.
- Have the battery replaced by an authorised technician when the digital display dims or functions become intermittent—do not attempt to open the case yourself as this will void the warranty.
- Periodically check that the band remains securely fastened and inspect for signs of wear or cracking, particularly if worn during intensive physical activity.
- The shock-resistant construction protects the internal mechanism, but avoid deliberate impacts against hard surfaces to maintain long-term durability.