Rotary Seamatic GMT Automatic Blue Dial Diver Stainless Steel Watch (RGB10005/04)

Price
R 11,950

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The Rotary Seamatic GMT automatic diver's watch combines robust engineering with refined aesthetics, delivering a professional-grade timepiece suited to both underwater exploration and everyday sophistication. Powered by the reliable Seiko NH34 automatic movement, this 42mm round stainless steel watch features a striking blue dial and a bi-directional rotating GMT bezel, enabling simultaneous tracking of two time zones — an essential complication for frequent travellers and dive professionals alike.

Beneath the scratch-resistant sapphire crystal, the sunray-finished blue dial is appointed with crisp white luminous markers and sword-shaped hands, ensuring legibility in low-light conditions and underwater environments. The GMT function is denoted by a dedicated arrow-tipped hand circling the 24-hour inner scale, while the date window at three o'clock provides practical daily utility. Water-resistant to an impressive 300 metres, the case is constructed from robust 316L stainless steel and paired with a three-link jubilee-style bracelet that balances comfort with durability.

At Cassims & Co., we are proud to be an authorised retailer for ROTARY watches, ensuring every Seamatic GMT is backed by a comprehensive two-year international warranty and our commitment to after-sales excellence. Whether you're planning a dive expedition or simply seeking a versatile automatic timepiece with genuine horological substance, this watch delivers exceptional value. Visit us at our Mall of the South boutique to experience the Seamatic GMT firsthand, and should you ever require maintenance or servicing down the line, our watch servicing and repairs team is always on hand to keep your timepiece performing at its best.

With a 40-hour power reserve and the proven reliability of Seiko's automatic calibre, the Seamatic GMT is a daily companion designed to endure the rigours of active use while maintaining the refined presence expected of a serious dive watch. Nationwide delivery is available across South Africa, bringing this exceptional timepiece directly to your door.

Specifications

  • Brand: Rotary

  • Model: Seamatic GMT

  • Reference: RGB10005/04

  • Case Shape: Round

  • Case Diameter: 42mm

  • Case Thickness: 14.7mm (approx.)

  • Case Material: 316L Stainless Steel

  • Dial Colour: Blue

  • Crystal: Sapphire

  • Movement: Seiko NH34 Automatic

  • Power Reserve: 40 hours

  • Functions: Hours, Minutes, Seconds, Date, GMT (Dual Time Zone)

  • Bezel: Bi-directional Rotating GMT Bezel

  • Bracelet Material: Stainless Steel (Three-Link Jubilee)

  • Lug Width: 22mm

  • Water Resistance: 300m / 30 ATM

  • Warranty: 2-Year International Rotary Warranty

FAQ

Q: What is the GMT function and how do I use it?

A: The GMT complication allows you to track a second time zone simultaneously. The dedicated GMT hand (with the arrow tip) makes one full rotation every 24 hours, and you can set it to reference a different time zone by using the bi-directional rotating bezel. This is particularly useful for travellers or anyone who needs to monitor time across multiple regions.


Q: Is this watch suitable for diving?

A: Yes. With 300-metre water resistance, a screw-down crown, and luminous dial markers, the Seamatic GMT is built to ISO 6425 diver's watch standards and is fully capable of recreational and professional diving activities.


Q: Does the automatic movement require a battery?

A: No. The Seiko NH34 automatic movement is powered by the natural motion of your wrist. If you wear the watch regularly, it will remain fully wound. If left stationary for more than 40 hours, you will need to manually wind it using the crown or wear it to restart the movement.


Q: Can the bracelet be resized to fit my wrist?

A: Yes, the stainless steel bracelet can be professionally adjusted for a perfect fit. Contact our team for full details on bracelet adjustment services.


Q: What is included with the watch at purchase?

A: Your Rotary Seamatic GMT will arrive in its original presentation box with all relevant warranty documentation and instruction manual, confirming its authenticity and coverage under the two-year international warranty.


Q: How accurate is the NH34 movement?

A: The Seiko NH34 is a reliable workhorse movement with typical accuracy of around -20 to +40 seconds per day, depending on wear patterns and wrist activity. This is standard for automatic movements in this category and can be regulated by a watchmaker if necessary.


Q: Can I wear this watch while swimming or showering?

A: Absolutely. With 300-metre water resistance, the watch is more than suitable for swimming, showering, and water sports. Ensure the crown is fully screwed down before any water exposure to maintain the case seal.

Warranty

  • This watch is covered by a 2-year international Rotary warranty from the date of purchase.

  • The warranty is valid only when the watch is purchased from an authorised Rotary 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, including scratches, strap wear, or crystal blemishes.

  • Battery replacement, routine servicing, and cleaning are not covered under warranty.

  • Water damage resulting from improper use (e.g. operating the crown underwater or exceeding the stated water resistance) is excluded.

  • Damage caused by accident, misuse, negligence, or unauthorised repairs voids the warranty.

  • To claim warranty service, retain your original proof of purchase and contact Cassims & Co. or an authorised Rotary service centre.

Care Guide

  • Rinse the watch with fresh water after exposure to saltwater or chlorine to prevent mineral buildup and corrosion.

  • Wipe the case and bracelet regularly with a soft, lint-free cloth to remove oils, perspiration, and dust.

  • Ensure the crown is fully screwed down before any water exposure to maintain the watch's water resistance integrity.

  • Avoid operating the crown or bezel while the watch is submerged or wet, as this can compromise the seals.

  • Store the watch in a cool, dry environment away from magnetic fields, extreme temperatures, and direct sunlight when not in use.

  • If the watch is not worn regularly, wind it manually or use a watch winder to keep the automatic movement lubricated and running smoothly.

  • Have the watch serviced every 3-5 years by a qualified watchmaker to ensure the movement remains accurate and the seals remain watertight.

  • Avoid impact or dropping the watch, as this can damage the movement, crystal, or case.

Why Buy From Cassim & Co.?
When you purchase the Rotary Seamatic GMT from Cassims & Co., you're buying from an authorised ROTARY retailer, ensuring full warranty protection and genuine provenance. Our Mall of the South boutique offers personalised service, including professional bracelet sizing and ongoing after-sales support for the life of your watch. With nationwide delivery across South Africa and a commitment to horological excellence, Cassims & Co. is your trusted partner for luxury timepieces.

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