Rolex Deepsea 44 mm 136668LB1 Yellow Gold Blue Rolex Deepsea 44 mm 136668LB1 Yellow Gold…

The Rolex Oyster Perpetual Deepsea is one of the most technically formidable wristwatches ever produced, engineered to withstand pressures at depths that surpass virtually every other production dive watch on the market. Introduced in 2008 and significantly evolved with the generation that brought reference 126660 before the current 136660 and precious-metal sibling lines, the Deepsea was born from Rolex's decades of deep-sea exploration partnerships, most famously its association with the TRIESTE bathyscaphe dives of the 1960s and the ongoing relationship with explorer and filmmaker James Cameron. The 136668LB1 represents the pinnacle of this lineage, casing that extreme capability in 18k yellow gold.

At 44mm in diameter the Deepsea wears with commanding presence, and the yellow gold case of reference 136668LB1 elevates the watch from a tool instrument into a statement of serious horological luxury. The case construction incorporates Rolex's patented Ringlock System — a nitrogen-alloyed steel ring, a domed sapphire crystal rated to extreme pressure, and a robust caseback — which collectively allow the watch to achieve a water resistance exceeding 3,000 meters, a specification that is engraved on the caseback and noted in the technical literature for this family of references. The screw-down crown with its signature triple-lock Twinlock system ensures the Oyster case remains hermetically sealed under any conditions.

The blue dial is an immediate visual signature of the LB designation within the Deepsea family, presenting a rich, saturated hue that reads differently under sunlight versus indoor lighting. Applied luminous hour markers and the Mercedes-style hands are coated with Rolex's Chromalight material, emitting a long-lasting blue glow that enhances legibility in low-light and underwater environments. The unidirectional rotatable bezel is fitted with a gloss black Cerachrom ceramic insert marked in 60-minute graduation, scratch-resistant and immune to fading from ultraviolet exposure — a detail that ensures the watch will look as precise and refined decades from now as it does today.

Power comes from Rolex's certified Swiss automatic movement, a self-winding caliber that carries the Superlative Chronometer designation, meaning it has been tested and certified by Rolex to a precision standard beyond the official COSC chronometer benchmark. The Oyster bracelet in matching 18k yellow gold is fitted with Rolex's Oysterlock safety clasp, incorporating a folding Oysterlock safety mechanism that prevents accidental opening, along with the Rolex Glidelock extension system that allows the bracelet length to be adjusted without tools — a practical touch on a watch built for aquatic adventure. The combination of gold bracelet and gold case gives the 136668LB1 a cohesive, jewelry-grade finish that distinguishes it sharply from the steel and Rolesor variants.

For collectors and enthusiasts, the 136668LB1 occupies a uniquely compelling position in the Rolex catalog: it is simultaneously a genuine professional instrument rated beyond virtually any depth a human diver could reach, and a precious-metal luxury piece of the highest order. This duality makes it exceptionally rare on the secondary market and a watch that appreciates both in sentimental and monetary value. Bizak & Co. sources pre-owned examples of this reference on request. Dealer availability, condition and final price are confirmed before purchase. Reach out to our team at bizakandco.com to discuss acquisition, secure payment options, and worldwide shipping — we are here to help you add this extraordinary Rolex Deepsea to your collection.