Rolex Sea-Dweller Two-Tone 126603 - 43mm - 2021

Why We Love This Watch

The Rolex Sea-Dweller reference 126603, produced in 2021, presents the professional dive watch in a compelling two-tone configuration, pairing 18ct yellow gold with Rolex's proprietary Oystersteel. At 43mm, the case offers a commanding presence on the wrist while remaining true to the tool-watch proportions the Sea-Dweller has always maintained. The matte black dial is paired with a unidirectional rotating Cerachrom bezel in ceramic, providing precise elapsed-time tracking and resistance to fading or scratching over time. A Cyclops lens magnifies the date display at 3 o'clock, consistent with Rolex's professional range. Chromalight luminescent material on the hands and hour markers ensures legibility in low-light conditions. Powering the watch is the Rolex Calibre 3235, an in-house movement delivering approximately 70 hours of power reserve along with Rolex's Superlative Chronometer certification. The helium escape valve on the case side supports saturation diving use, and water resistance is rated to 1,220 metres. The matching two-tone Oyster bracelet is equipped with a Glidelock extension system and Fliplock extension link, allowing precise length adjustment without tools. This example is presented in mint condition and comes complete with its original box and papers, making it a well-documented example of this desirable reference.