The Casio G-Shock GD-100-1BDR is an iconic digital watch designed for those who refuse to compromise on strength, function, or style. Part of G-Shock’s legendary extra-large case lineup, this stealthy black timepiece combines militaristic aesthetics with cutting-edge timekeeping technology. Whether you are navigating rugged terrain or managing an intense daily schedule in Sri Lanka, the GD-100-1BDR is engineered to endure life’s toughest challenges without missing a beat.

Premium Design

Featuring a bold matte black finish, the GD-100-1BDR exudes a tactical, low-profile charm. Its oversized 51.2mm resin case creates a powerful wrist presence, while the rivet bezel construction adds visual strength and impact protection. The dark, negative LCD display matches the dark resin housing perfectly, offering a sleek look that appeals to fitness enthusiasts, outdoor adventurers, and everyday watch lovers alike.

Dial Features

The digital display layout is meticulously split into clear functional zones, allowing instant readability of time, date, day, and active modes. To combat pitch-black environments, the watch is equipped with a high-brightness Super Illuminator LED backlight with Auto Light functionality that turns on with a simple tilt of the wrist. The screen is shielded by a scratch-resistant mineral glass lens, keeping the digital display crystal clear through years of intensive wear.

Case Features

Built with G-Shock's signature floating module construction, the case isolates internal quartz mechanisms from severe impacts, drops, and vibrations. The large anti-skid operation buttons are strategically textured, ensuring effortless control even when wearing gloves or operating the watch in rainy conditions.

Movement

At the heart of the GD-100-1BDR is the high-precision Casio Module 3263 quartz movement. Accurate within ±15 seconds per month, this module delivers world time across 48 cities and 31 time zones, a 1/100-second stopwatch, a 24-hour countdown timer, and 5 independent daily alarms. Powered by a heavy-duty CR2025 cell, it boasts an impressive battery lifespan of approximately 7 years.

Strap/Bracelet

The watch is fitted with a flexible black resin strap designed to withstand sweat, saltwater, and harsh environmental exposure. Equipped with a sturdy dual-pin metal buckle, it ensures a comfortable and slip-free fit on wrists of all sizes throughout long, demanding days.

Water Resistance

With a robust 200-meter (20 BAR) water resistance rating, the GD-100-1BDR is built for water sports, heavy downpours, swimming, and recreational snorkeling. You can wear it confidently through Sri Lanka’s monsoon seasons or during beach getaways along the coast.

Comfort

Despite its massive 51.2mm presence, the watch weighs just 72 grams. The light resin materials and curved case back conform naturally to the wrist, offering all-day wearing comfort during intense workouts or outdoor labor.

Ideal For

This timepiece is ideal for modern men seeking a durable, multi-functional digital watch. Its stealth design makes it a favorite for tactical professionals, military personnel, gym-goers, hikers, and collectors who appreciate G-Shock’s legacy of absolute toughness.

Why Buy From Ranasinghe Watch Works

When purchasing luxury and performance timepieces in Sri Lanka, authenticity and after-sales support matter most. Ranasinghe Watch Works has been a pillar of trust and horological excellence since 1931. When you buy the Casio G-Shock GD-100-1BDR from us, you are guaranteed:

• 100% original Casio products sourced directly from authorized channels

• Official manufacturer warranty with comprehensive local service support

• Expert guidance from certified watch specialists with decades of experience

• Fast, safe, and secure islandwide delivery across Sri Lanka

Conclusion

The Casio G-Shock GD-100-1BDR represents the ultimate fusion of durability, stealth style, and practical digital functionality. With its 7-year battery life, high-intensity LED light, and 200m water resistance, it stands ready for any adventure. Order yours today from Ranasinghe Watch Works and experience timekeeping built for extreme life.

PRODUCT HIGHLIGHTS

• Authentic Casio G-Shock GD-100-1BDR digital watch

• Extreme shock-resistant case construction built to endure severe impacts

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

• Super Illuminator high-brightness white LED backlight with Auto Light switch

• Long-lasting CR2025 battery offering up to 7 years of operational life

• World Time function covering 48 cities and 31 time zones worldwide

• Multi Time display supporting instant tracking of up to 4 distinct cities

• Precision 1/100-second stopwatch and 24-hour countdown timer

• 5 daily or one-time alarms with flash alert notification

• Lightweight 72g design with a durable black resin strap and case

KEY FEATURES

• Brand: Casio

• Model: GD-100-1BDR (Module 3263)

• Gender: Men

• Collection: G-Shock

• Movement: Digital Quartz

• Display: Digital LCD (Negative Display)

• Glass: Mineral Glass

• Case Material: Resin

• Band Material: Resin

• Band Color: Black

• Dial Color: Black Digital

• Case Diameter: 51.2 mm

• Case Thickness: 17.4 mm

• Weight: 72 g

• Water Resistance: 200 Meters (20 BAR)

• Calendar: Full Auto-Calendar pre-programmed to the year 2099

• Battery: CR2025 (Approx. 7 years life)

• Warranty: 1-Year Official Warranty

• Country of Origin: Japan Movement (Assembled in Thailand/China)

BUYING REASONS

1. Unrivaled Durability: Shockproof design protects internal components against drops and harsh vibrations.

2. Exceptional 7-Year Battery: Low maintenance performance powered by a long-life CR2025 battery.

3. 200M Water Resistance: Fully protected against heavy tropical rain, swimming, and coastal activities.

4. Stealth Tactical Design: All-black matte aesthetic provides a low-key, professional appearance.

5. Super Illuminator Backlight: Ultra-bright LED light makes reading time simple in complete darkness.

6. Global Time Tracking: World time across 31 time zones keeps international travelers connected.

7. Multi Time City Switching: Easily track and swap between time settings for 4 individual cities.

8. Textured Anti-Skid Buttons: Oversized buttons allow smooth operation even under wet or cold conditions.

9. Lightweight Ergonomics: Weighs only 72g for extreme comfort during prolonged sports or tactical wear.

10. 100% Genuine Guarantee: Backed by full warranty support from Ranasinghe Watch Works, trusted since 1931.

SHOP MORE CASIO

• Casio Collection: Explore full range at https://ranasinghewatchworks.lk/product?type=watch&brand=casio

LEARN MORE ABOUT THIS WATCH

• Official Manufacturer Website: Casio International G-Shock Series

FAQ

Is the Casio G-Shock GD-100-1BDR original at Ranasinghe Watch Works?

Yes, all timepieces sold at Ranasinghe Watch Works are 100% genuine and sourced directly from authorized brand distributors.

What is the battery life of the GD-100-1BDR?

The GD-100-1BDR is powered by a CR2025 cell that offers an approximate battery life of up to 7 years under standard operating conditions.

Can I wear this watch while swimming or diving in Sri Lanka?

Yes, the watch features 200-meter water resistance, making it suitable for swimming, snorkeling, and water sports.

Does the watch have an automatic light feature?

Yes, the GD-100-1BDR includes an Auto Light switch that automatically activates the high-brightness LED backlight when you angle your wrist toward your face.

What is the case size of the GD-100-1BDR?

The watch features an extra-large resin case measuring 55mm x 51.2mm x 17.4mm.

Is this model suitable for tactical or military use?

Yes, its shockproof structure, matte black stealth finish, and high-contrast digital display make it a top choice for military and tactical environments.

How much does the Casio G-Shock GD-100-1BDR weigh?

Despite its large profile, the watch is lightweight, weighing only 72 grams.

What warranty comes with this watch?

Purchasing from Ranasinghe Watch Works includes a 1-year official warranty covering internal quartz movement defects.

How many daily alarms can I set on this watch?

The GD-100-1BDR allows you to set up to 5 independent daily or one-time alarms with a flash alert notification.

Does Ranasinghe Watch Works offer delivery across Sri Lanka?

Yes, Ranasinghe Watch Works offers fast and safe islandwide delivery to your doorstep anywhere in Sri Lanka.