The Casio G-Shock GA-2100-7A7DR—affectionately dubbed the "CasiOak" due to its distinctive octagonal bezel—redefines modern horology by combining rugged utility with refined minimalist fashion. Featuring an eye-catching, crisp all-white execution, this watch brings a fresh, contemporary vibe to G-Shock’s world-renowned toughness. Available in Sri Lanka at Ranasinghe Watch Works, this timepiece represents the perfect blend of cutting-edge materials and versatile design.

Premium Design

Embracing a clean monochromatic motif, the GA-2100-7A7DR stands out through stark simplicity. Its iconic eight-sided bezel delivers a bold silhouette that effortlessly transitions from casual daytime wear to elevated streetwear ensembles. The sleek profile maintains G-Shock's signature rugged DNA without unnecessary bulk, making it one of the most stylish additions to the 2100 series line-up.

Dial Features

The dial exhibits an analog-digital layout engineered for instant legibility and minimalist appeal. Accentuated with silver-toned hands and crisp hour markers against a white backdrop, the dial features an analog day indicator at the 9 o'clock position alongside an LCD display for digital functions. Equipped with a hand-shift feature, the analog hands gracefully move out of the way at the touch of a button to ensure an unobstructed view of the digital screen. A double LED Super Illuminator provides bright light for both the dial face and digital display in pitch-black environments.

Case Features

Constructed using G-Shock's innovative Carbon Core Guard structure, the inner case integrates carbon fiber into high-rigidity bio-based resin. This advanced structure protects the internal module from severe impacts, drops, and vibrations while keeping the case remarkably thin at just 11.8 mm. The outer case dimensions measure 48.5 × 45.4 mm, offering a balanced wrist presence.

Movement

Powered by a precise Casio Japanese quartz movement (Module 5611), the GA-2100-7A7DR maintains exceptional accuracy within ±15 seconds per month. The movement delivers robust multi-function capabilities, including world time across 31 time zones (48 cities + UTC), a 1/100-second chronograph, a 24-hour countdown timer, 5 daily alarms, and a full automatic calendar programmed up to the year 2099.

Strap/Bracelet

Crafted from eco-friendly bio-based resin, the matching white strap is engineered for long-lasting durability and flexibility. Secured with a reliable pin buckle, the band fits wrist sizes from 145 mm to 215 mm. The strap features quick-release pushpins, making maintenance or future custom swapping smooth and hassle-free.

Water Resistance

Built for water sports and heavy outdoor use, the watch boasts an impressive 200-meter (20 Bar) water resistance rating. You can confidently wear it while swimming, jet-skiing, or snorkeling along Sri Lanka’s tropical coastlines without compromising internal mechanics.

Comfort

Weighing a mere 51 grams, this watch delivers incredible lightweight comfort on the wrist. Its ultra-slim 11.8 mm thickness slips effortlessly under shirt cuffs or jacket sleeves, eliminating the bulk historically associated with shock-resistant digital-analog watches.

Ideal For

This model is ideal for urban fashion enthusiasts, streetwear lovers, athletes, and watch collectors in Sri Lanka who want a versatile everyday timepiece. Its neutral all-white colorway makes it a standout accessory for both men and women who appreciate clean, contemporary aesthetics combined with rugged dependability.

Why Buy From Ranasinghe Watch Works

When investing in a quality timepiece, authenticity and after-sales support matter most. Established in 1931, Ranasinghe Watch Works is Sri Lanka’s trusted luxury watch destination. Every Casio watch purchased through our store or online platform is guaranteed 100% original, complete with an official manufacturer warranty, dedicated customer care, and expert technical service.

Conclusion

The Casio G-Shock GA-2100-7A7DR combines modern architectural design, eco-friendly materials, and world-class shock resistance into an all-white package. Upgrade your daily style with this legendary "CasiOak" model. Order yours today from Ranasinghe Watch Works and enjoy fast island-wide delivery across Sri Lanka.

PRODUCT HIGHLIGHTS

• Signature "CasiOak" octagonal bezel design in a clean all-white monochromatic colorway.

• Ultra-slim 11.8 mm profile for lightweight, all-day wearing comfort.

• Carbon Core Guard structure offering maximum shock resistance.

• Eco-friendly bio-based resin case and strap construction.

• 200-meter water resistance suitable for swimming and water sports.

• Dual LED Super Illuminator for easy night-time legibility.

• World time function covering 31 time zones (48 cities + UTC).

• Hand-shift feature to unblock the digital display.

• 1/100-second stopwatch, countdown timer, and 5 daily alarms.

• 100% authentic item backed by official warranty from Ranasinghe Watch Works.

KEY FEATURES

• Brand: Casio

• Model: GA-2100-7A7DR

• Gender: Men / Unisex

• Collection: G-Shock (2100 Series)

• Movement: Japanese Quartz (Module 5611)

• Display: Analog-Digital

• Glass: Mineral Glass

• Case Material: Carbon / Bio-based Resin

• Band Material: Bio-based Resin

• Band Color: White

• Dial Color: White

• Case Diameter: 45.4 mm

• Case Thickness: 11.8 mm

• Weight: 51 g

• Water Resistance: 200 meters / 20 Bar

• Calendar: Full Auto-Calendar (to year 2099)

• Battery: Approx. 3 years on SR726W × 2

• Warranty: Official Manufacturer Warranty

• Country of Origin: Japan Movement / Assembled in Casio Facilities

BUYING REASONS

1. Iconic Octagonal Aesthetic: Get the highly sought-after "CasiOak" style at an accessible price point.

2. Unmatched Durability: The Carbon Core Guard structure protects against accidental drops and impacts.

3. Sleek & Lightweight: At only 51 grams and 11.8 mm thick, it never feels heavy on the wrist.

4. All-White Versatility: Modern white color scheme matches casual, active, and street fashion outfits.

5. Eco-Conscious Materials: Made with sustainable bio-based resin materials.

6. 200m Water-Resistant: Dive, swim, or shower without worrying about water damage.

7. Global Timekeeping: World time covering 31 time zones makes traveling hassle-free.

8. Night Visibility: Double LED Super Illuminator lights up both analog hands and digital display.

9. Guaranteed Authenticity: Guaranteed genuine Casio product from Ranasinghe Watch Works (Est. 1931).

10. Reliable Support: Enjoy fast island-wide delivery and official warranty services in Sri Lanka.

SHOP MORE CASIO

• Explore the full Casio Collection at Ranasinghe Watch Works.

LEARN MORE ABOUT THIS WATCH

• Learn more about G-Shock technology on the official Casio Website.

FAQ

Is the Casio G-Shock GA-2100-7A7DR original?

Yes, all timepieces sold at Ranasinghe Watch Works are 100% genuine and sourced directly with official manufacturer backing.

What is the nickname of the GA-2100 series?

The GA-2100 series is widely known as the "CasiOak" due to its octagonal bezel shape, reminiscent of high-end luxury sports watch designs.

Is this watch waterproof for swimming?

Yes, it features 200-meter (20 Bar) water resistance, making it suitable for swimming, snorkeling, and marine activities.

How long does the battery last?

The GA-2100-7A7DR operates on two SR726W batteries with an estimated lifespan of approximately 3 years.

What material is used for the band and case?

The case and band are constructed from eco-friendly bio-based resin reinforced with a Carbon Core Guard inner frame.

What is the case thickness of this watch?

The case thickness is exceptionally slim at just 11.8 mm.

Does the watch have a light for dark conditions?

Yes, it comes equipped with a Double LED Super Illuminator light for both the analog face and digital LCD panel.

What is the warranty period in Sri Lanka?

Every watch includes an official manufacturer warranty honored through Ranasinghe Watch Works in Sri Lanka.

Can I change the strap on the GA-2100-7A7DR?

Yes, the band features quick-release pushpins, making strap changes simple and straightforward.

Where can I buy the GA-2100-7A7DR in Sri Lanka?

You can buy it online at https://ranasinghewatchworks.lk or visit the Ranasinghe Watch Works store.