Rolex Sea-Dweller Two-Tone Steel & Yellow Gold (Ref. 126603)

A historic milestone and a bold statement in professional diving luxury: The Rolex Sea-Dweller in Yellow Rolesor (Reference 126603). This 43mm masterpiece marked the very first time Rolex introduced precious 18K yellow gold into the ultra-robust Sea-Dweller line. Combining the extreme, over-engineered performance of a heavy-duty deep-sea tool watch with the undeniable elegance of solid gold, this timepiece delivers an incredible wrist presence and unmatched versatility.

Key Features:

• Yellow Rolesor Construction: A powerful two-tone fusion combining high-grade Oystersteel (904L) with solid 18K yellow gold on the bezel, winding crown, and the bracelet center links.
• Sleek Black Dial & Bezel: A glossy black dial framed by a unidirectional Cerachrom ceramic bezel with gold-coated molded numerals, offering a classic look that beautifully highlights the gold accents.
• Gold "SEA-DWELLER" Script: The dial features the legendary model name printed in a striking yellow gold tone, harmonizing perfectly with the hands and 18K gold hour markers.
• Helium Escape Valve: Equipped with Rolex's patented automatic decompression chamber at 9 o'clock, vital for professional saturation diving to release trapped helium safely.
• Oysterlock & Glidelock Clasp: The robust three-piece link bracelet features a folding safety clasp with the Fliplock extension link and the patented Glidelock system for precise adjustment over a diving suit.
• Calibre 3235 Movement: Powered by the state-of-the-art in-house automatic movement, featuring a highly efficient Chronergy escapement and a generous 70-hour power reserve.

Technical Specifications:

• Brand: Rolex
• Reference: 126603
• Model: Sea-Dweller
• Case Diameter: 43 mm
• Material: Oystersteel and 18K Yellow Gold (Yellow Rolesor)
• Crystal: Scratch-resistant sapphire with a Cyclops lens over the date window
• Water Resistance: 1.220 meters (4.000 feet) with Triplock triple waterproofness system
• Certification: Superlative Chronometer (officially certified precision of -2/+2 seconds per day)