Rolex Sea-Dweller 126603

Product Specifications

• Model: Rolex Sea-Dweller 126603

• Gender: Men’s

• Case Size: 43mm

• Case Material: Oystersteel and 18k Yellow Gold (Rolesor)

• Bezel: Unidirectional rotatable, black Cerachrom insert

• Dial: Black with Chromalight luminescence

• Crystal: Scratch-resistant sapphire with Cyclops lens

• Movement: Rolex Caliber 3235, automatic mechanical

• Power Reserve: Approximately 70 hours

• Functions: Hours, minutes, seconds, date

• Water Resistance: 1,220 meters / 4,000 feet

• Bracelet: Oyster bracelet with Oystersteel and yellow gold center links

• Clasp: Folding Oysterlock safety clasp with Glidelock and Fliplock extension systems

The Rolex Sea-Dweller 126603 blends the technical brilliance of Rolex’s professional dive watches with the luxurious appeal of yellow gold. As part of the Sea-Dweller collection, this 43mm timepiece is designed for extreme underwater performance, while its two-tone Oystersteel and 18k yellow gold construction adds a prestigious, bold look. Whether you’re a deep-sea explorer or a collector of iconic timepieces, this model delivers strength, sophistication, and precision in one dynamic package.

This version of the Sea-Dweller features Rolesor, Rolex’s term for the combination of Oystersteel and 18k yellow gold. The result is a timepiece that retains all the durability of a dive instrument while elevating the look with a luxurious gold finish on the bezel, crown, and center bracelet links. The black dial offers a striking contrast, further enhancing legibility and visual impact. The name “Sea-Dweller” is printed in gold, subtly highlighting the watch’s exclusivity and design unity.

Built to withstand the pressures of deep diving, the Sea-Dweller 126603 is water-resistant to 1,220 meters (4,000 feet) and features a helium escape valve, which allows excess pressure to escape during decompression. This feature ensures that the watch case remains sealed and uncompromised, even during professional saturation diving.

At its heart is the in-house Rolex Caliber 3235 automatic movement, a powerhouse known for its precision, reliability, and efficiency. This movement features Rolex’s patented Chronergy escapement, a blue Parachrom hairspring for anti-magnetic resistance, and boasts an impressive 70-hour power reserve. Certified as a Superlative Chronometer, it guarantees accuracy to within -2/+2 seconds per day.

The unidirectional rotatable bezel with a black Cerachrom ceramic insert allows divers to track elapsed time underwater. It’s extremely resistant to scratches and fading, ensuring long-lasting clarity. The bezel’s knurled edge ensures easy grip, even when wet or wearing gloves.

The Chromalight display ensures optimal readability in low-light environments. The luminescent hands and markers emit a long-lasting blue glow, making it easy to read the time in any condition. The date window at 3 o’clock is magnified by the Cyclops lens, enhancing visibility without compromising the watch’s rugged construction.

Completing the look is the solid-link Oyster bracelet, crafted from a combination of Oystersteel and 18k yellow gold. It features the Oysterlock safety clasp, the Glidelock extension system, and a Fliplock extension link—giving you the ability to fine-tune the fit, whether worn on the wrist or over a wetsuit.

The Rolex Sea-Dweller 126603 is more than just a tool watch—it’s a statement of power, adventure, and timeless elegance. Its blend of professional-grade dive capabilities and luxurious two-tone finish makes it one of the most versatile pieces in the Sea-Dweller line.

Available now at Luxury Watch Empire, this model is ideal for those who appreciate the fusion of high-performance engineering and refined aesthetic design.