The Casio G-Shock DW-6900UMS-1DR stands as a modern icon of utility, resilience, and tactical style. Rooted in G-Shock's historic 6900 series—a lineup celebrated globally by military personnel, outdoor adventurers, and urban trendsetters—this reference brings a covert, stealth-inspired aesthetic to a time-tested silhouette. Whether navigating rugged trails, engaging in aquatic sports, or complementing casual streetwear, the DW-6900UMS-1DR delivers uncompromised performance under demanding conditions. At Ranasinghe Watch Works, Sri Lanka’s home for genuine horology since 1931, we bring you this genuine timepiece complete with manufacturer-backed authenticity.

Premium Design

Every angle of the Casio G-Shock DW-6900UMS-1DR exudes purposeful engineering. Featuring a cohesive matte-black resin finish from bezel to strap, the timepiece minimizes reflection and maintains a low-profile presence. The black ion-plated metal side buttons enhance tactical utility while adding a subtle metallic texture. The signature triple-graph LCD arrangement gives the dial its distinctive character, providing a visual balance between functional readouts and aggressive styling.

Dial Features

Designed for maximum readability under diverse lighting conditions, the digital display features crisp contrast against a dark backdrop. The signature three-round sub-dials track timekeeping graphics, stopwatch intervals, and mode indicators in real time. Equipped with a bright LED backlight (Super Illuminator) with afterglow, time-telling remains effortless in pitch-black environments. A flash alert function also flashes with a buzzer signal during countdown alarms and hourly time alerts.

Case Features

Built to endure high-impact force, the robust resin case measures 53.2 × 50 × 18.7 mm. G-Shock's proprietary hollow-case structure suspends the internal module, protecting it against sudden drops, vibrations, and severe shocks. The outer bezel features raised ridges that safeguard the scratch-resistant mineral glass lens from direct face-down impact.

Movement

At the core of the DW-6900UMS-1DR lies a high-precision Casio digital Quartz module. Operating with an accuracy of ±15 seconds per month, this low-maintenance module ensures precise time tracking day after day. Powered by a long-lasting CR2016 battery, the watch provides approximately 5 years of operational life before requiring a standard battery replacement.

Strap/Bracelet

The watch is fitted with a durable black resin strap designed to resist degradation from sweat, freshwater, and saltwater exposure. Featuring a sturdy stainless steel pin buckle, the band fits wrist sizes from 145 mm to 205 mm securely. Flexible yet resilient, the band naturally contours to the wrist for all-day stability during physical exercise or tactical duties.

Water Resistance

Engineered for serious water activities, the DW-6900UMS-1DR features a 200-meter (20 BAR) water resistance rating. This makes it suitable for recreational scuba diving, surface swimming, high-impact water sports, and heavy tropical rainstorm exposure without compromise.

Comfort

Despite its bold dimensions and reinforced build, the DW-6900UMS-1DR weighs only 67 grams. Its lightweight construction prevents wrist fatigue during extended periods of wear. Ergonomic strap curvature ensures snug positioning without pinching skin or trapping heat, making it an ideal choice for humid Sri Lankan weather.

Ideal For

• Military, security, and tactical field operations.

• Outdoor sports, hiking, diving, and fitness training.

• Streetwear enthusiasts seeking a bold matte-black digital watch.

• Anyone demanding extreme durability for everyday duty.

Why Buy From Ranasinghe Watch Works

Established in 1931, Ranasinghe Watch Works is Sri Lanka's trusted destination for authentic timepieces. When you order from us, you receive:

• 100% Genuine Casio products directly sourced from authorized supply chains.

• Official Casio warranty coverage for complete peace of mind.

• Fast, insured island-wide delivery across Sri Lanka.

• Knowledgeable customer care and certified watch service experts.

Conclusion

The Casio G-Shock DW-6900UMS-1DR combines stealth tactical aesthetics with legendary durability. Secure your authentic G-Shock from Ranasinghe Watch Works today and elevate your daily kit with a time-proven instrument.

PRODUCT HIGHLIGHTS

• Built with G-Shock's signature shock-resistant hollow case structure.

• 200-meter (20 BAR) water resistance for diving and water sports.

• Matte black resin case and strap with black ion-plated buttons.

• Classic triple-graph digital dial layout.

• High-intensity LED backlight (Super Illuminator) with afterglow.

• 1/100-second stopwatch function with elapsed and split time modes.

• 24-hour countdown timer with auto-repeat capability.

• Multi-function daily alarm and hourly time signals.

• Full auto-calendar programmed up to the year 2099.

• Long battery life of approximately 5 years on a CR2016 cell.

KEY FEATURES

• Brand: Casio

• Model: DW-6900UMS-1DR

• Gender: Men's

• Collection: G-Shock (6900 Series)

• Movement: Quartz Digital

• Display: Digital LCD

• Glass: Mineral Glass

• Case Material: Resin

• Band Material: Resin Band

• Band Color: Black

• Dial Color: Black / Dark LCD

• Case Diameter: 50.0 mm

• Case Thickness: 18.7 mm

• Weight: 67 g

• Water Resistance: 200 Meters / 20 BAR

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

• Battery: CR2016 (Approx. 5 Years)

• Warranty: Official Manufacturer Warranty

• Country of Origin: Japan / Casio Authorized Facilities

BUYING REASONS

1. Unmatched Shock Resistance: Built to survive heavy impacts, vibration, and extreme environments.

2. 200M Water Resistance: Fully capable of handling swimming, diving, and water activities.

3. Tactical Black Finish: Non-reflective stealth appearance ideal for military or law enforcement duties.

4. Iconic 6900 Silhouette: One of G-Shock’s most popular and enduring watch designs worldwide.

5. Lightweight Ergonomics: Weighs just 67 grams for fatigue-free daily wear.

6. 5-Year Battery Life: Extended power duration reduces routine maintenance needs.

7. High-Visibility LED Light: Easily check time in pitch dark conditions with Super Illuminator backlighting.

8. Precision Timing Tools: Built-in 1/100-second stopwatch and 24-hour countdown timer.

9. 100% Authentic: Sourced directly through verified channels at Ranasinghe Watch Works.

10. Heritage Seller: Backed by over 90 years of watchmaking trust in Sri Lanka.

SHOP MORE CASIO

• Explore the full Casio Collection at Ranasinghe Watch Works.

• Browse the G-Shock Series for ultra-rugged digital timepieces.

LEARN MORE ABOUT THIS WATCH

• Official Casio International G-Shock Series: Casio Official Product Page

FAQ

Is the Casio G-Shock DW-6900UMS-1DR 100% original?

Yes, all timepieces sold at Ranasinghe Watch Works are 100% original, brand new, and covered by an official warranty.

Can I swim and dive with the DW-6900UMS-1DR?

Yes, this watch has a 200-meter (20 BAR) water resistance rating, making it suitable for swimming, water sports, and recreational diving.

What type of battery does the DW-6900UMS-1DR use and how long does it last?

It uses a single CR2016 lithium battery which provides approximately 5 years of operational life.

What is the size of the DW-6900UMS-1DR case?

The case dimensions are 53.2 mm in length, 50.0 mm in width, and 18.7 mm in thickness.

Does the watch feature a backlight?

Yes, it comes with a built-in LED backlight (Super Illuminator) with afterglow for clear reading in darkness.

How much does this watch weigh?

The DW-6900UMS-1DR is lightweight, weighing approximately 67 grams.

What functions are included in the module?

It features a 1/100-second stopwatch, 24-hour countdown timer, multi-function alarm, hourly signal, flash alert, and full auto-calendar.

Does Ranasinghe Watch Works deliver across Sri Lanka?

Yes, Ranasinghe Watch Works offers reliable island-wide delivery throughout Sri Lanka.

Is the resin strap replaceable?

Yes, standard replacement G-Shock DW-6900 straps can be fitted to this model.

Where can I buy the Casio DW-6900UMS-1DR in Sri Lanka?

You can buy it online at https://ranasinghewatchworks.lk or visit our store.