Rotary Seamatic Automatic GMT Blue/Red Pepsi Bezel Black Dial Stainless Steel Diver Watch (GB04378/95)
- Price
- R 11,950
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This Rotary Seamatic GMT automatic diver demonstrates impressive mechanical capability within a classic tool-watch silhouette. Housed in a robust 42mm round stainless steel case with a distinctive blue-and-red bidirectional rotating bezel—the iconic 'Pepsi' colourway long favoured by global travellers—the black dial offers clarity through luminous applied hour markers and skeletal handset. A dedicated red-tipped GMT hand tracks a second time zone against the marked 24-hour scale encircling the dial, while the date window at 3 o'clock maintains everyday practicality.
Powering this timepiece is a reliable automatic movement visible through a signed exhibition caseback, delivering the tactile pleasure of mechanical horology without the need for manual winding in daily wear. The 300-metre water resistance rating ensures genuine dive-watch credentials, reinforced by a screw-down crown and robust 316L stainless steel construction throughout both case and integrated three-link bracelet. Sapphire crystal protects the dial from impact and maintains optical clarity even under challenging conditions.
At Cassims & Co., we stock an extensive selection of ROTARY watches that honour British watchmaking heritage with Swiss precision engineering. This Seamatic GMT exemplifies that balance—a purposeful instrument equally suited to the boardroom or the ocean. The blue-and-red bezel insert against the polished steel case creates an arresting visual contrast, while the automatic calibre delivers dependable timekeeping across multiple zones without the inconvenience of battery replacement.
Whether you're tracking a second time zone for international business, coordinating with colleagues abroad, or simply appreciate the functional elegance of a true GMT complication, this Seamatic delivers tangible horological value. Our watch servicing and repairs team ensures your Rotary remains in peak condition for years to come, and you're welcome to experience the watch in person at our Mall of the South boutique where our specialists can discuss sizing, movement servicing schedules, and the full scope of Rotary's dive-watch lineage.
Specifications
- Brand: Rotary
- Model: Seamatic GMT
- Reference: GB04378/95
- Movement: Automatic
- Case Shape: Round
- Case Diameter: 42mm
- Case Thickness: 15mm
- Case Material: 316L Stainless Steel
- Bezel: Bidirectional rotating, blue and red aluminium insert
- Crystal: Sapphire
- Dial Colour: Black
- Dial Markers: Luminous applied indices
- Hands: Luminous, GMT hand with red tip
- Complication: GMT (second time zone), date display at 3 o'clock
- Bracelet Material: 316L Stainless Steel
- Bracelet Type: Three-link integrated
- Clasp: Fold-over with safety
- Water Resistance: 300 metres (1000 feet)
- Crown: Screw-down
- Caseback: Exhibition (display back)
- Gender: Mens
FAQ
Q: What is a GMT complication and how does it work on this Rotary Seamatic?
A: A GMT complication allows you to track a second time zone simultaneously. On this Seamatic, the red-tipped GMT hand makes one full rotation every 24 hours, and you read it against the numbered 24-hour scale on the bezel. The primary hour and minute hands display your local time as normal, while the GMT hand shows home time or any other reference zone you've set.
Q: Is this watch suitable for actual diving, or is it a desk diver?
A: With 300 metres of water resistance, a screw-down crown, and robust 316L stainless steel construction, this Seamatic is fully capable of recreational diving. The bidirectional rotating bezel allows you to track elapsed dive time, and the luminous markers ensure legibility in low-visibility conditions underwater.
Q: Does the automatic movement require a battery?
A: No. An automatic movement is powered by the natural motion of your wrist throughout the day, winding the mainspring mechanically. If you wear the watch regularly, it will maintain power indefinitely. If left unworn for an extended period, simply wind it via the crown or wear it for a few hours to restore the power reserve.
Q: Can I adjust the bracelet myself, or does it require professional sizing?
A: The bracelet features removable links that allow for sizing adjustments. While many customers successfully resize their own bracelets using a link-removal tool, we recommend visiting our store for professional sizing to ensure a secure and comfortable fit without risking damage to the bracelet pins.
Q: What is the purpose of the exhibition caseback?
A: The sapphire exhibition caseback allows you to view the automatic movement in operation—a feature prized by mechanical watch enthusiasts. You can observe the rotor winding as you move, appreciate the finishing of the calibre, and verify the authenticity of the movement at a glance.
Q: How often does an automatic watch like this require servicing?
A: Rotary recommends servicing every 3 to 5 years depending on wear conditions. Regular servicing ensures the movement remains lubricated, accurate, and water-resistant. Our team can advise on the optimal service interval based on your usage patterns and can arrange manufacturer-approved servicing when required.
Q: Is the bezel unidirectional or bidirectional, and does that matter?
A: This Seamatic features a bidirectional rotating bezel, meaning it turns freely in both directions. For dive timing, a unidirectional bezel (which only rotates counterclockwise) is the ISO standard to prevent accidental extension of dive time. This bidirectional design is better suited to tracking elapsed time in non-critical applications or setting a second time zone reference, and it reflects the watch's GMT-travel focus rather than pure dive-tool specification.
Warranty
- This Rotary Seamatic carries a 2-year international warranty from the date of purchase, valid when purchased 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, including scratches, dents, or worn bracelet links.
- Battery replacement, routine servicing, and cleaning are not covered under warranty.
- Water damage resulting from misuse (operating crown underwater, failure to secure screw-down crown, exceeding rated depth) is excluded.
- Accidental damage, unauthorised repairs, or modifications void the warranty immediately.
- To make a warranty claim, present your original proof of purchase and contact our team, who will coordinate with Rotary's authorised service network.
- The warranty is non-transferable and applies only to the original purchaser.
Care Guide
- Rinse the watch with fresh water after exposure to saltwater, chlorine, or perspiration to prevent corrosion and maintain the integrity of seals.
- Avoid operating the crown or pushers while the watch is wet or submerged, as moisture can enter the case and damage the movement.
- Store the watch on a flat surface or watch winder when not in use to protect the movement and maintain power reserve.
- Keep the watch away from strong magnetic fields (speakers, laptops, magnetic clasps) which can affect timekeeping accuracy.
- Have the water resistance tested annually if you use the watch for swimming or diving, as gaskets degrade over time.
- Clean the stainless steel case and bracelet with a soft cloth and mild soapy water, drying thoroughly to maintain the polished finish.
- Avoid exposing the watch to extreme temperature changes, which can affect lubrication and seals.
- If the watch stops or loses significant accuracy, bring it in for professional assessment rather than attempting to adjust the movement yourself.