Rolex Oyster Perpetual Sea-Dweller 43mm, Reference 126600-0002

In 2017, Rolex released a new generation of its Sea-Dweller watches as a replacement of the Reference 116600 series.

Featuring a 43mm diameter case in Oystersteel and the self-winding 3235 calibre, the Sea-Dweller Ref. 126600 maintains a water resistance of 1,220 metres or 4,000 feet.

The first model from this generation is Reference 126600-0001, which features a black dial with red SEA-DWELLER inscription as a tribute to the Single Red prototypes produced in the 1960s. In 2021, Rolex replaced this model with a new reference 126600-0002.

Rolex Oyster Perpetual Sea-Dweller 43mm, Reference 126600-0002
Rolex Sea-Dweller 43mm, Reference 126600-0002/ Image Copyright: Rolex

The majority of the aesthetic and technical characteristics of both references remain same. A notable difference is that the new Rolex Sea-Dweller 126600-0002 comes without the Fliplock extension links.

Technical details

Model: Rolex Oyster Perpetual Sea-Dweller 43mm, Reference 126600-0002

Case
Material: Oystersteel
Type: Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 43 mm
Unidirectional rotatable 60-minute graduated, scratch-resistant Cerachrom insert in ceramic, numerals and graduations coated in platinum
Winding crown: Screw-down, Triplock triple waterproofness system
Crystal: Scratch-resistant sapphire, Cyclops lens over the date
Water resistance: 1,220 metres / 4,000 feet, helium escape valve

Movement
Calibre 3235, Manufacture Rolex
Perpetual, mechanical, self-winding movement
Precision: -2/+2 sec/day, after casing
Paramagnetic blue Parachrom hairspring
High-performance Paraflex shock absorbers
Bidirectional self-winding via Perpetual rotor
Power reserve: Approximately 70 hours

Functions
Centre hour, minute and seconds hands
Instantaneous date with rapid setting
Stop-seconds for precise time setting

Bracelet
Type: Oyster, flat three-piece links
Material: Oystersteel
Folding Oysterlock safety clasp with Rolex Glidelock extension system

Dial
Black dial with red SEA-DWELLER text
Highly legible Chromalight display with long-lasting blue luminescence

Certification
Superlative Chronometer (COSC + Rolex certification after casing)

Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version

This year, Rolex is introducing an Oyster Perpetual Sea-Dweller in a yellow Rolesor version, combining Oystersteel and 18 ct yellow gold.

Unveiled at Basel-world 2019, this new model (reference 126603-0001) brings 18 ct yellow gold to the Sea-Dweller range for the first time.

On the black dial of the latest model, the name “Sea-Dweller” is inscribed in a yellow hue, echoing the colour of the 18 ct yellow gold. When this deep diver’s watch collection  was updated in 2017 by launching the Rolex Sea-Dweller Reference 126600, this lettering was in red, in reference to the original model.

Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version

The light reflections on the case sides and lugs highlight the profile of the Sea-Dweller’s 43mm diameter Oyster case, which features a unidirectional rotatable bezel with a 60-minute graduated Cerachrom insert in black ceramic. Equipped with the self-winding calibre 3235, the new Sea-Dweller yellow Rolesor version carries the Superlative Chronometer certification.

Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version

The Rolex Sea-Dweller watch was designed in collaboration with the pioneers of professional deep-sea diving, who spent extended periods underwater. This ultra-resistant tool watch accompanied the first experimental underwater habitat programmes. It played a vital role in conquering the ocean depths thanks to its Oyster case and the helium escape valve, fitted into the side of the watch case.

Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version

The Oyster case of the Sea-Dweller is guaranteed waterproof to a depth of 1,220 metres (4,000 feet). Its middle case is crafted from a solid block of particularly corrosion-resistant Oystersteel. The case back, edged with fine fluting, is hermetically screwed down with a special tool that allows only Rolex watchmakers to access the movement.

The winding crown, fitted with the Triplock triple waterproofness system, screws down securely against the case and is protected by an integral crown guard. The scratchproof sapphire crystal is fitted with a Cyclops lens at 3 o’clock for easy reading of the date.

Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version

The helium escape valve, patented by Rolex in 1967, acts as a safety valve. It allows excess pressure built up in the watch case during a dive to escape during a diver’s decompression phase in a hyperbaric chamber, while preserving the waterproofness of the watch.

Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version

Rolesor, the combination of gold and steel on a Rolex watch, has been a signature feature of the brand since 1933 when the name was registered. On the new Sea-Dweller yellow Rolesor version (reference 126603-0001), the bezel, winding crown and centre links of the bracelet are in 18 ct yellow gold, while the case and outer links of the bracelet are in Oystersteel.

The unidirectional rotatable bezel is fitted with a 60-minute graduated Cerachrom insert in black ceramic that allows divers to safely monitor their dive and decompression times. The moulded, recessed graduations and numerals are coated with yellow gold via PVD. The bezel’s knurled edge offers excellent grip, to comfortably set dive time even when wearing gloves.

Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version

The new version of the Sea-Dweller is powered by Calibre 3235, a new-generation self-winding mechanical movement entirely developed and manufactured by Rolex. It incorporates innovations like Chronergy escapement and blue Parachrom hairspring  with a Rolex overcoil. These components enhance shock and magnetic resistances, precision and autonomy of the watch.

Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version (reference 126603-0001)

The Rolex Calibre 3235 is equipped with a self-winding module via a Perpetual rotor. Thanks to its barrel architecture and the escapement’s superior efficiency, the power reserve of calibre 3235 extends to approximately 70 hours.

The new Oyster Perpetual Sea-Dweller watch is covered by the Superlative Chronometer certification redefined by Rolex in 2015.  The Superlative Chronometer status is symbolized by the green seal that comes with every Rolex watch and is coupled with an international five-year guarantee.

This version of the Sea-Dweller is fitted with an Oyster bracelet featuring centre links in 18 ct yellow gold and satin-finished outer links in Oystersteel. It is equipped with a Rolex-designed and patented Oysterlock folding safety clasp, which prevents accidental opening.

The bracelet also features the Rolex Glidelock extension system, designed and patented by the brand. This inventive toothed mechanism, integrated beneath the clasp, allows fine adjustment of the bracelet length by some 20 mm in increments of approximately 2 mm, without the use of tools. The watch can therefore be worn over a diving suit up to 3 mm thick. A concealed attachment system ensures seamless visual continuity between the bracelet and case.

Technical details

Model: Rolex Oyster Perpetual Sea-Dweller, Yellow Rolesor Version (reference 126603-0001)

Case reference: 126603
Bracelet reference: 97223
Category: Oyster Perpetual Professional
Superlative Chronometer certification
International five-year guarantee

Case
Oyster (monobloc middle case, screw-down case back and winding crown)
Integral crown guard
Helium escape valve
Diameter: 43 mm
Material: Oystersteel and 18 ct yellow gold (yellow Rolesor)
Middle case: Oystersteel, satin finish with polished sides
Bezel: 18 ct yellow gold, unidirectional rotatable; 60-minute graduated Cerachrom insert in black ceramic; moulded, recessed numerals and graduations coated with yellow gold via PVD (Physical Vapour Deposition); capsule in 18 ct yellow gold, highly legible Chromalight (long-lasting luminescence, blue glow)
Case back: Solid, screw-down with fine fluting
Winding crown: Screw-down, Triplock triple waterproofness system
Crystal: Scratch-resistant sapphire; Cyclops lens over the date with double anti-reflective coating
Waterproofness: 1,220 metres (4,000 feet)

Movement
Calibre 3235, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision: −2/+2 sec/day, after casing
Jewelling: 31 rubies
Power reserve: Approximately 70 hours

OSCILLATOR
• Frequency: 28,800 beats/hour (4 Hz)
• Paramagnetic blue Parachrom hairspring
• Rolex overcoil
• Large balance wheel with variable inertia
• High-precision regulating via four gold Microstella nuts
• Traversing balance bridge
• High-performance Paraflex shock absorbers

ESCAPEMENT
• Chronergy with optimized energy efficiency
• Paramagnetic nickel-phosphorus pallet fork and escape wheel

Functions
Centre hour, minute and seconds hands
Instantaneous date at 3 o’clock with secure rapid-setting
Stop-seconds for exact time setting

Dial
Black, gloss, fine satin finish
Hour markers in 18 ct yellow gold, highly legible Chromalight (long-lasting luminescence, blue glow)
Hands in 18 ct yellow gold, highly legible Chromalight (long-lasting luminescence, blue glow)

Bracelet
Oyster, three-piece solid links
Polished centre links in 18 ct yellow gold, satin-finished outer links in Oystersteel with polished edges (yellow Rolesor)
Oysterlock folding safety clasp
Rolex Glidelock extension system (approx. 20 mm in increments of approx. 2 mm)

Rolex Oyster Perpetual Sea-Dweller, New Generation

Rolex is introducing the latest generation of its Oyster Perpetual Sea-Dweller, a legend among professional divers’ watches created 50 years ago in 1967.

The new Sea-Dweller watch (reference 126600-0001) features a larger, 43 mm diameter case and the new self-winding calibre 3235,  employed for the first time in a Rolex Professional category watch.

To enhance the reading of the date, it is equipped, also for the first time, with a Cyclops lens on the crystal at 3 o’clock. The dial bears the name Sea-Dweller in red, a reference to the first model. Like all Rolex watches, the new Sea-Dweller carries the Superlative Chronometer certification redefined by Rolex in 2015 to ensure singular performance on the wrist.

Rolex Oyster Perpetual Sea-Dweller Reference 126600

A technical divers’ watch, waterproof today to a depth of 1,220 metres (4,000 feet), the Oyster Perpetual Sea-Dweller was originally designed for the pioneers of professional deep-sea diving.

It is equipped with one of the inventions that contributed to its stature: the helium escape valve, patented by Rolex in 1967. While preserving the waterproofness of the watch, this ingenious safety valve regulates the pressure accumulated in the case during the decompression phases of deep-water saturation dives.

Rolex Oyster Perpetual Sea-Dweller Reference 126600

The 60-minute graduated, unidirectional rotatable bezel of the new Rolex Sea-Dweller 50th anniversary watch (reference 126600-0001) enables divers to precisely and safely monitor their dive and decompression times. It is equipped with a patented black Cerachrom bezel insert whose colour is unaffected by ultraviolet rays.

The graduation is coated via PVD with a thin layer of platinum. The sleek black dial features large Chromalight hour markers and hands, filled with luminescent material that emits a long-lasting blue glow for excellent legibility in dark conditions.

Rolex Sea-Dweller 50th Anniversary Reference 126600

The Sea-Dweller’s Oyster case, guaranteed waterproof to a depth of 1,220 metres (4,000 feet). Its characteristically shaped middle case is crafted from a solid block of particularly corrosion resistant 904L steel. Its fluted case back is hermetically screwed down with a special tool that allows only Rolex watchmakers to access the movement.

The winding crown is protected by a crown guard that is an integral part of the middle case. Fitted with the Triplock triple waterproofness system, the crown screws down securely against the case, providing watertight security akin to a submarine’s hatch. The sapphire crystal glass is provided with a Cyclops lens at 3 o’clock for easy reading of the date.

2017 Rolex Sea-Dweller 50th Anniversary

The Rolex Sea-Dweller 50th Anniversary watch is equipped with calibre 3235, a new-generation movement entirely developed and manufactured by Rolex.

With 14 patents, this self-winding mechanical calibre offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability. It incorporates the new Chronergy escapement patented by Rolex, which combines high energy efficiency with great dependability. Made of nickel-phosphorus, it is also insensitive to magnetic interference.

An optimized blue Parachrom hairspring is fitted to the oscillator, the true heart of the watch. Patented and manufactured by Rolex in an exclusive paramagnetic alloy, it is up to 10 times more precise than a traditional hairspring in case of shocks. A Rolex overcoil ensures its regularity in any position. Calibre 3235 is equipped with a self-winding module via a Perpetual rotor. Thanks to its new barrel architecture and the escapement’s superior efficiency, the power reserve of calibre 3235 extends to approximately 70 hours.

Rolex Oyster Perpetual Sea-Dweller Reference 126600

The new Sea-Dweller’s solid-link Oyster bracelet in 904L steel is fitted with an Oysterlock safety clasp that prevents accidental opening.

A double extension system allows adjustments to be made without the use of tools, so that the watch can be worn comfortably over a diving suit up to 7 mm thick. The Fliplock extension link extends the bracelet by 26 mm, while the Rolex Glidelock system allows fine adjustment of the bracelet length in 2 mm increments for a total of approximately 20 mm.

Rolex Oyster Perpetual Sea-Dweller Reference 126600-0001

Like all Rolex watches, the Sea-Dweller is covered by the Superlative Chronometer certification redefined by Rolex in 2015. The Superlative Chronometer status is symbolized by the green seal that comes with every Rolex watch and is coupled with an international five-year guarantee.

This new model is the replacement of the Rolex Sea-Dweller 4000 (reference 116600) series.

Technical details

Model: Rolex Oyster Perpetual Sea-Dweller 43mm (reference 126600-0001)
Case ref. 126600 | Bracelet ref. 97220

Case
Type: Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 43 mm
Material: 904L steel, satin and polished finish
Safety: Helium escape valve
Bezel: Unidirectional rotatable 60-minute graduated, with Cerachrom insert in black ceramic, engraved numerals and graduations coated with platinum via magnetron sputtering
Case back: Screw-down with Rolex fluting
Winding crown: Screw-down, Triplock triple waterproofness system
Crown guard: Integral part of the middle case
Crystal: Scratch-resistant sapphire; Cyclops lens over the date with double anti-reflective coating
Waterproofness: 1,220 metres (4,000 feet)

Movement
Calibre 3235, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision: −2/+2 sec/day, after casing
Oscillator Frequency: 28,800 beats/hour (4 Hz)
Paramagnetic blue Parachrom hairspring
Rolex overcoil
Large balance wheel with variable inertia
High-precision regulating via four gold Microstella nuts
Traversing balance bridge
High-performance Paraflex shock absorbers
Escapement: Chronergy with optimized energy efficiency; Paramagnetic nickel-phosphorus pallet fork and escape wheel
Jewelling: 31 rubies
Power reserve: Approximately 70 hours

Functions
Centre hour, minute and seconds hands
Instantaneous date at 3 o’clock with rapid-setting
Stop-seconds for precise time setting

Dial
Colour: Black, gloss finish
Hour markers: Highly legible Chromalight appliqués (long-lasting luminescence) in 18 ct white gold
Hands: 18 ct white gold, Chromalight

Bracelet
Type: Oyster, three-piece solid links
Material: 904L steel, satin finish, polished edges
Clasp: Oysterlock folding safety clasp
Rolex Glidelock extension system (20 mm in increments of 2 mm)
Fliplock extension link (26 mm)

Rolex Oyster Perpetual Sea-Dweller 4000, New Version (2014)

Rolex introduces a modern version of the legendary Oyster Perpetual Sea-Dweller watch.

Waterproof to a depth of 1,220 metres (4,000 feet), this 40 mm technical divers’ watch in 904L steel features the latest in Rolex innovation: Cerachrom bezel insert in ceramic, long-lasting Chromalight luminescence, paramagnetic blue Parachrom hairspring, Oysterlock safety clasp and Rolex Glidelock bracelet extension system.

Rolex Oyster Perpetual Sea-Dweller 4000 (with 904L steel case and black dial)

Originally designed for the pioneers of professional deep-sea diving, the Rolex Oyster Perpetual Sea-Dweller 4000 is equipped with one of the inventions that contributed to its stature: the helium escape valve, patented by Rolex in 1967.

Rolex Oyster Perpetual Sea-Dweller 4000 (with 904L steel case and black dial)

This ingenious safety valve releases helium from the watch case as the gas expands during the decompression phases of deep-water saturation dives, while preserving the water-proofness of the watch.

Rolex Oyster Perpetual Sea-Dweller 4000 (with 904L steel case and black dial)
The Sea-Dweller 4000’s 60-minute graduated, unidirectional, rotatable bezel enables divers to precisely and safely monitor their dive and decompression times. It is equipped with a patented black Cerachrom bezel insert manufactured by Rolex in a virtually scratchproof ceramic whose colour is unaffected by ultraviolet rays.

The graduation is coated via PVD (Physical Vapour Deposition) with a thin layer of platinum. The sleek black dial features large Chromalight hour markers and hands filled with luminescent material that emits a long-lasting blue glow for excellent legibility in dark conditions.

Rolex Oyster Perpetual Sea-Dweller 4000 (with 904L steel case and black dial), Reference 116600

The Sea-Dweller 4000’s Oyster case is water proof up to a depth of 1,220 metres (4,000 feet). The characteristically shaped middle case is crafted from a solid block of particularly corrosion-resistant 904L steel.

Rolex Oyster Perpetual Sea-Dweller 4000 (with 904L steel case and black dial), Reference 116600

The fluted case back is hermetically screwed down with a special tool exclusive to Rolex watchmakers. The winding crown, fitted with the patented Triplock triple water-proofness system, screws down securely against the case, offering watertight security akin to a submarine’s hatch. It is protected by a crown guard that is an integral part of the middle case.

The crystal is made of virtually scratchproof sapphire. The waterproof case of the Sea-Dweller 4000, housing its high-precision movement, ensures optimal protection from water, dust, pressure and shocks.

Rolex Oyster Perpetual Sea-Dweller 4000 (with 904L steel case and black dial)

The new Sea-Dweller 4000 watch with a black dial (reference 116600-0001) is equipped with calibre 3135, a self-winding mechanical movement with a date display entirely developed and manufactured by Rolex.

Like all Rolex Perpetual movements, the 3135 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. Its architecture, like that of all Oyster watch movements, makes it singularly reliable.

Rolex Oyster Perpetual Sea-Dweller Reference 116600 (with 904L steel case and black dial)

The oscillator has a blue Parachrom hairspring patented and manufactured by Rolex in an exclusive alloy of niobium and zirconium. Insensitive to magnetic fields, the Parachrom hairspring offers great stability when exposed to temperature variations and remains up to 10 times more precise in case of shocks than a traditional hairspring.

The Sea-Dweller 4000’s Oyster bracelet is equipped with an Oysterlock safety clasp that prevents accidental opening, and with a double extension system that allows the watch to be worn comfortably over a diving suit up to 7 mm thick.

Rolex Oyster Perpetual Sea-Dweller 4000 Reference 116600 (with 904L steel case and black dial)

The Fliplock extension link extends the bracelet by 26 mm, while the Rolex Glidelock system allows fine adjustments of the bracelet length in 2 mm increments for a total of approximately 20 mm.

Technical details

Model: Rolex Oyster Perpetual Sea-Dweller 4000 (with 904L steel case and black dial)
Reference: 116600

Case
Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 40 mm
Material: 904L stainless steel super-alloy, satin finish
Helium valve
Case Back: Screw-down with Rolex fluting
Bezel: Unidirectional rotatable 60-minute graduated bezel with black Cerachrom insert in ceramic, engraved numerals and graduations coated with platinum via magnetron sputtering (PVD)
Winding Crown: Screw-down, Triplock triple water-proofness system
Crown Guard: Integral part of the middle case
Crystal: Scratch-resistant sapphire
Water-proofness: 1,220 metres (4,000 feet)

Movement
Calibre 3135, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Officially certified Swiss chronometer (COSC)
Frequency: 28,800 beats/hour (4Hz)
Paramagnetic blue Parachrom hairspring
Breguet overcoil
Large balance wheel with variable inertia
High-precision regulating via four gold Microstella nuts
Traversing Balance Bridge
Jewelling: 31 rubies
Power Reserve: Approximately 48 hours

Functions 
Centre hour, minute and seconds hands
Instantaneous date at 3 o’clock
Stop-seconds for precise time setting

Dial
Black, satin finish
Hour markers: Highly legible Chromalight appliques (long-lasting luminescence) in 18 ct white gold
Hands: Chromalight hands in 18 ct white gold

Bracelet
Type: Oyster three-piece solid links
Material: 904L stainless steel super alloy, satin finished, polished edges
Clasp: Oysterlock folding safety clasp
Rolex Glidelock extension system (20 mm in increments of 2 mm)
Fliplock extension link (26 mm)

Note: I think, the full reference number of this watch is 116600-0003.

DOXA SUB 4000T Professional

Introduced in 2011, the DOXA SUB 4000T Professional is a rugged diving watch designed for adventurers who love to explore ocean depths.

Designed to perform during the most extreme conditions, the DOXA SUB 4000T comes in a massive 46 mm stainless steel case which houses a Swiss Made automatic movement. It carries the most desirable features of a deep diving watch: Luminous hands and hour markers for high legibility during poor light conditions, the rotating bezel indicating the decompression table, and the helium valve at 9 o’clock to protect the timepiece from the extreme pressure of water.

DOXA SUB 4000T Professional offers water-resistance to a depth of 1,220 metres (4000 feet). This edition was limited to 500 pieces.

In 2012, a new model was added to SUB 4000T collection. Proposed in a limited edition of 200 pieces, the new DOXA watch was equipped with a sapphire crystal bezel. Other technical details of this new model remains same.

Technical details
Movement
Automatic, 42-hour power reserve

Functions
Hours, minutes, seconds, date and power-reserve indicator

Case
Polished and satin-finished stainless steel, 46 mm
Unidirectional rotating bezel (Sapphire crystal unidirectional rotating bezel for 2012 model)with decompression table in feet or
Scratch-resistant, anti-reflective sapphire crystal
Screw-down, engraved, numbered back
Helium valve at 9 o’clock
Water-resistant to 1,220 m (4000 ft)

Dial
Orange or black
Luminescent hourmarkers and hands
Date window at 3 o’clock, power reserve at 7 o’clock

Bracelet/Strap
Stainless steel with folding clasp and diving-suit extension system