Rolex Deep Sea Dweller 44mm 136660DBLUE

Overview 

The 136660DBLUE was designed around a single engineering objective: survive 3,900 metres of pressure. The case architecture required to meet that — the Ringlock System, a 5.5mm domed sapphire crystal, a grade 5 titanium caseback, a 44mm width — makes no concession to wearing comfort. This is the technical extreme of Rolex's dive watch programme.

The case is 44mm Oystersteel with a titanium caseback and the Ringlock System — a nitrogen-pressurised internal ring that reinforces the caseback against implosion at depth. The dial is the D-Blue gradient: deep blue at the top transitioning to black at the lower section, with "DEEPSEA" text in green at 6 o'clock. The 5.5mm domed sapphire crystal is visually distinctive when viewed from above or at angle. On the wrist, the case extends below the wrist line due to its thickness — this is not a discreet watch, and it is not intended to be.

Calibre 3235, 70-hour power reserve. The movement itself is standard issue; the engineering distinction of this reference is entirely in the case.

The 136660DBLUE occupies a different buyer profile from the rest of the dive range. Few owners dive to 3,900 metres; the watch sells on the engineering story and the D-Blue dial's visual identity. Secondary pricing has held at a modest discount to retail — the buyer universe is specific, but demand within it is consistent. Brand new, unworn, complete with box and papers dated March 2026, at RM65,500.

Specifications

Condition

Brand New, Unworn Condition, Complete Original Set with Box and Papers dated March 2026.

Warranty

5 years manufacturers warranty

Further Insight from Our Specialist Team

Read our Full Review here : Rolex Submariner: A 70 Year Masterclass in Continuous Refinement

Watch our Video Review Here :