Rolex Deep Sea Dweller 126660DBLUE 2019 [Preowned]

Overview The Deepsea is where Rolex's dive watch engineering reaches its operational limit: 3,900 metres water resistance, achieved through the Ring Lock System — a compression architecture that prevents the case from buckling at depth rather than simply sealing it against water ingress. The 126660 in D-Blue is the generation introduced in 2018 with the Calibre 3235 upgrade, retaining the case architecture of its predecessor while adding 70-hour power reserve to a watch that had run on 48 hours for the previous decade. The D-Blue dial — a gradient from near-black at 12 o'clock to deep blue at 6 — originated as a commemorative execution for James Cameron's 2012 Challenger Deep solo dive and has since become the defining Deepsea configuration. The case is 44mm Oystersteel — larger and more substantial than any other Rolex dive watch, a direct consequence of the Ring Lock System's internal architecture. The domed sapphire crystal is 5.5mm thick; the unidirectional rotating bezel carries a black Cerachrom insert with platinum-coated engravings. The D-Blue dial reads as a gradient compression: near-black at 12 o'clock shifting to an intense blue at 6, the transition occurring across applied luminous hour markers and white printed text. The Oyster bracelet uses Rolex's Glidelock extension, adjustable in 2mm increments without tools — practical for a watch designed to be worn over a wetsuit. The Calibre 3235 replaced the 3135 as the primary mechanical change in the 126660 generation — 70-hour power reserve over the previous 48, with Chronergy escapement and Parachrom hairspring, certified as a Superlative Chronometer to ±2 seconds per day. For a dive watch of this specification, the additional reserve matters: 70 hours keeps the watch running through a weekend of non-wear without needing to be wound before use. Water resistance is 3,900 metres. The Deepsea occupies a distinct position in the Rolex dive lineup — it is not just a larger Submariner, it is a watch built around a different engineering problem. The D-Blue accounts for the majority of Deepsea transactions on the secondary market, which means pricing transparency is high and condition benchmarks are well-established at this price point. This example carries September 2019 papers — the year following the 126660's introduction — placing it as an early production piece with over six years of age; but this example piece is a watch well cared for. Preowned, excellent condition, complete with box and papers dated September 2019, at RM46,500. Specifications Brand : Rolex Model Name : Deep Sea Dweller Reference : 126660DBLUE Material Steel Movement : Rolex Calibre 3235, 70 hours Power Reserve, Automatic Case Diameter : 44mm Bracelet / Strap : Steel Features : 3900m depth rating, Blue luminescence on dial, Uni-directional Cerachrome Bezel, Helium Escape Valve, Folding Oysterlock safety clasp with Rolex Glidelock extension system and Fliplock extension link. Gradient Blue Dial. Condition Preowned, Excellent Condition, Complete Original Set with Box and Papers dated September 2019. Warranty 1 year warranty from SCW.