Rolex Sea-Dweller ’Rolesor’ 4000ft in 18kt Yellow Gold & 904L Stainless Steel with Monobloc Middle Case, Unidirectional Rotatable 60-Minute Graduated Bezel with Scratch-Resistant Cerachrom Insert in Ceramic with Numerals and Graduations Coated in Gold, Black Dial with Highly Legible Chromalight Display and Long-Lasting Blue Luminescence, Screw-Down Crown with Triplock Triple Waterproofness System, Scratch-Resistant Sapphire Crystal with Cyclops Lens Over the Date, Superlative Chronometer Self-Winding Rolex Manufacture Caliber 3235 Movement with Paramagnetic Blue Parachrom Hairspring and Chronergy Escapement with Optimized Energy Efficiency, 70-Hour Power Reserve, 18kt Yellow Gold and 904L Stainless Steel Oysterlock Bracelet with Rolex Glidelock Extension System

The 43mm diameter solid three-body case, bracelet, curved lugs, and flat angled bezel are polished/brushed. The unidirectional rotating graduated 60-minute bezel has a black Cerachrom insert with Arabic numeral markers every ten minutes, and a knurled edge. The graduation scale is coated in PVD (Physical Vapour Deposition), with a thin layer of platinum. The dial is black with "Sea-Dweller" printed in gold, and gold-rimmed luminous Chromalight dot, baton, and triangular hour markers that emit a long-lasting blue glow for legibility in dark dives. There are gold Rolex baton hands with luminous Chromalight inserts, a center sweep seconds hand with a luminous dot indicator, and a white minute/seconds track around the perimeter. The date aperture window is at 3 o’clock, underneath a Cyclops magnification lens. It has a Certified Official Superlative Chronometer (COSC) rating, and there is a 70-hour power reserve at full wind. It’s water resistant to 1,220 meters/4,000 feet. The 15mm thick case, dial, and movement are all signed. It has an integral stainless steel and yellow gold oyster link bracelet with a flip lock deployant clasp and a scratch resistant sapphire crystal with anti-reflective coating. There is a flush corrector type helium gas relief button at the 9 o’clock position on the left-side of the case. A crown guard protects the screw down Triplock winding crown, and the solid screw down case back is engraved with "ROLEX OYSTER SEA DWELLER – ORIGINAL GAS ESCAPE VALVE." 

This Two-Tone Rolex Sea Dweller 126603 has a mechanical automatic self-winding Rolex "Chronergy" caliber 3235 movement. It’s rhodium plated with fausses cotes embellishment, and it has the new Chronergy escapement with extremely high energy and dependability. It’s made of nickel-phosphorous and is insensitive to magnetic interference. There is an optimized blue Parachrom hairspring connected to the oscillator, a Rolex overcoil, and a monometallic anti-magnetic balance adjusted or temperature and 5 positions. The 3235 movement has 14 new patents. As a whole, this Rolex Sea-Dweller Rolesor represents a rare convergence of uncompromising professional capability and unmistakable luxury. Built to withstand the most extreme underwater environments yet executed in yellow gold and steel, it carries a confidence that few watches can match. Every detail, from the depth rating and helium escape valve to the refined use of precious metal, speaks to Rolex’s philosophy of engineering first, prestige second, and never at the expense of performance. This is not a decorative diver but a true Sea-Dweller at heart, elevated by Rolesor into something bolder and more versatile. For the collector or wearer who wants a watch that can genuinely do it all, this reference stands as a modern icon of strength, precision, and enduring desirability.

Reference No. 126603