Reference:116600

Sea-Dweller -> 116600

The 116600 is a three-year reissue. Rolex unveiled it at Baselworld 2014, sold it through 2017, and replaced it at Baselworld 2017 with the 126600, the 50th-anniversary Sea-Dweller with the red dial text and the larger case. Six years had elapsed since the 116660 Deepsea moved the Sea-Dweller line to 44mm in 2008, and the 116600 walked the reference back to 40mm — the same Oyster diameter the 16660 and 16600 established, the same 1220-metre depth rating, the same helium escape valve at 9 o'clock. The changes sat elsewhere. A Cerachrom ceramic bezel replaced aluminum, the Parachrom Blu hairspring replaced the standard 3135 spring, Chromalight replaced Super-LumiNova, and a Maxi dial brought enlarged applied indices. The "Sea-Dweller 4000" marketing name carried over from the 16660 and 16600 even though "4000" never appeared on the 116600's dial. Three years of production with no mark generations makes it one of the shortest runs of any modern Rolex sport reference, and the last 40mm Sea-Dweller before the 126600 took the line to 43mm.

Rolex Sea-Dweller 116600.

Core facts

detail	value
reference	116600
family	Sea-Dweller
collector framing	"the last 40mm Sea-Dweller", "Sea-Dweller 4000"
production	2014 to 2017
run length	3 years — one of the shortest modern Rolex sport-line runs
movement	caliber 3135 with Parachrom Blu hairspring, 31 jewels, 28,800 vph, ~48h power reserve
case	40mm, 904L Oystersteel, helium escape valve at 9 o'clock, Triplock crown
crystal	flat sapphire, no Cyclops
bezel	unidirectional 60-minute Cerachrom ceramic insert with platinum-coated graduations
depth	1220m / 4000ft
dial	Maxi black with applied white-gold-surround indices, Chromalight lume
bracelet	97200 Oyster, Glidelock + Fliplock
predecessor	16600 (with a six-year 40mm-case gap, 2008 to 2014)
successor	126600 (2017, 43mm + red SEA-DWELLER text + cal 3235)
serial format	random 8-character alphanumeric ("scrambled" scheme adopted across Rolex in 2010)

Where it sits in the line

Between the 16600 ending in 2008 and the 116600 launching in 2014, the Sea-Dweller as a 40mm reference did not exist. The 116660 Deepsea ran at 44mm in the saturation-diving slot, and the Submariner Date 116610LN sat at 40mm but without the helium valve and 1220-metre depth rating. The 116600 closed that gap.

Three years later the 126600 closed it out. The 50th anniversary of the Sea-Dweller line — the 1665's 1967 prototype delivery to SEALAB 3 — called for a tribute reference, and Rolex built it at 43mm with the red "SEA-DWELLER" callback to the 1665 Single Red. That left the 116600 as the last small-case Sea-Dweller, the only modern Sea-Dweller without a Cyclops or red text, and the only one carrying a Cerachrom bezel against the aluminum-insert generation that preceded it.

Inside that three-year window nothing moved. The 116600 ran one dial, one bracelet, and one movement specification, with no mark generations and no transitional dial anomalies or factory colourways to sort. It carries the cleanest variant set in the entire Sea-Dweller line.

Production outline

Launch (Baselworld March 2014)

116600 Sea-Dweller 4000 — 2014 Baselworld introduction with the Cerachrom ceramic bezel (fully-graduated 60-minute scale, distinct from the Submariner's first-quarter-only graduations) and the Maxi dial. The only modern ceramic-bezel Rolex without a Cyclops magnifier.

Rolex unveiled the 116600 at Baselworld 2014 as the return-to-40mm Sea-Dweller, with retail availability beginning in 2015 through the Authorised Dealer network. Launch pricing ran about USD 7,100 in the US, CHF 9,900 in Switzerland, EUR 8,500 in Europe, and SGD 13,560 in Singapore, roughly 15 percent below the Deepsea 116660 and 20 percent above the Submariner Date 116610LN.

Production run (2014 to 2017)

Production ran continuously across three calendar years. Authorised-dealer allocation stayed available until late 2016, then dried up as the discontinuation approached, and the final 2017 allocations went to long-waitlist customers — forum coverage cites nine-month waits. Grey-market 2017 purchases at major retailers settled around the mid-USD 8,000 range by the discontinuation window, while final-year retail at authorised dealers reached about USD 10,400.

Discontinuation (Baselworld 2017)

The 126600 50th-anniversary Sea-Dweller launched at Baselworld 2017 and replaced the 116600 in the catalogue. The 126600 brought the 43mm case, red "SEA-DWELLER" dial text, sapphire Cyclops over the date, and caliber 3235 with 70-hour power reserve and Chronergy escapement. The 116600 left production at the end of the 2017 Baselworld cycle.

Movement notes

The caliber 3135 is the same base movement the 16600 wore, but the 116600 generation gets the Parachrom Blu hairspring as standard — the Sea-Dweller line's first Parachrom outing. Earlier 16600 examples were split as the Parachrom Blu rolled into the 3135 family progressively through the mid-2000s; the 116600 carries it from launch.

The movement runs 31 jewels at 28,800 vph, or 4 Hz, with about 48 hours of power reserve, quickset date, and hacking seconds. Its free-sprung balance sits under a full balance bridge on KIF Elastor shock absorbers, with the Paraflex variant on later production, and the Parachrom Blu hairspring is both paramagnetic and shock-resistant. Chronometer certification is COSC to the pre-2015 standard of ±6 seconds per day, before the 2015 Superlative Chronometer re-certification at ±2 seconds per day that the 126600 receives.

The cal 3135 architecture is otherwise unchanged from the 16600 generation, a movement already refined across two decades by the time the 116600 inherited it.

Dial

A single dial ran across the whole production. The face is matte black with applied indices surrounded by 18-karat gold edges, the "Maxi dial" framing introduced on the Submariner 16610LV "Kermit" in 2003 and standardised across the Rolex sport line in the late 2000s. The 116600's plots are enlarged relative to the 16600's and the surrounds are wider. The Mercedes hour hand is broader to match.

Lume technology is Chromalight, Rolex's proprietary alkaline-earth aluminate compound. It is brighter at peak emission than Super-LumiNova and emits in a longer-wavelength blue glow that Rolex rates as visible for up to eight hours in dark conditions. The 16600 ended on Super-LumiNova; the 116600 launched on Chromalight. No transitional dial exists.

Dial text reads "SEA-DWELLER" in white only. No red text, no "4000" depth designation, no other configurations. The red "SEA-DWELLER" returns on the 126600 successor in 2017. The "4000" depth designation was retired from the dial when production left the 16600 era. The depth rating "1220m=4000ft" prints below the text in the matte sans-serif font that the Maxi-dial Sea-Dweller carries throughout.

There is no Cyclops over the date window, continuing a Sea-Dweller convention that dates back to the 1665, where the unmagnified flat acrylic crystal was an operational requirement for saturation-pressure resistance. Sapphire crystals long ago made the Cyclops mechanically trivial on a dive watch, but the tradition stayed until the 126600 broke it.

The 6 o'clock chapter ring reads "SWISS MADE", consistent with the post-1998 Super-LumiNova and Chromalight era.

Case, bezel, crystal, and crown notes

Case

40mm Oyster, 904L Oystersteel, the higher-corrosion-resistance steel grade Rolex standardised across the sport line in the early 2010s. Lug-to-lug approximately 46.5mm, case thickness 15.0 to 15.5mm (slightly thicker than the 16600's 14.4mm to accommodate the Cerachrom bezel and the Glidelock clasp's machinery), lug width 20mm. Screw-down case-back.

Bezel: Cerachrom ceramic with platinum-coated graduations

Cerachrom ceramic bezel insert with platinum-coated graduations — the 116600 signature feature against the aluminum-bezel 16600. Image via Monochrome.

The bezel insert is the 116600's signature feature. It runs Cerachrom, Rolex's proprietary zirconium-oxide ceramic, scratch-resistant and colourfast under UV. The 60-minute scale is fully graduated, not just the first 15 minutes; the full scale is a return to the MilSub-style minute track that the 5517 wore. Numerals and graduations are coated in platinum via magnetron sputtering. The bezel is engraved first, then platinum vapour is deposited in a vacuum chamber, then the surplus platinum is polished off everywhere except inside the engravings, leaving bright platinum graphics against the polished black ceramic surround. The pearl at 12 o'clock is lumed and matches the dial Chromalight.

Every Sea-Dweller before the 116600 wore an aluminum insert, the 16600 included, so the ceramic marks the first visual break in the line. The 126600 successor continues with Cerachrom.

Crystal and crown

The crystal is flat sapphire with no Cyclops, sitting slightly proud of the bezel edge. The crown is the Triplock screw-down with triple-gasket sealing, Rolex's standard sport-line architecture for the period.

Helium escape valve

The 9 o'clock valve carries the 16660-generation architecture sized for the 1220-metre depth rating. The family hub carries the patent and operational history.

Caseback

The caseback is solid screw-down stainless steel, engraved with "ROLEX OYSTER", twin coronets, and "ORIGINAL GAS ESCAPE VALVE" — the same convention the 16600 carried and a feature throughout the modern line. The 126600 successor keeps the engraving on a thicker case profile.

Bracelet: 97200 with Glidelock and Fliplock

The 97200 Oyster bracelet runs in 904L Oystersteel with solid centre and end-links and brushed centres with polished bevels. Lug width 20mm matches the case. The clasp carries two extension systems. Glidelock provides 20mm of fine adjustment in 2mm increments across 5 positions and works without tools — lift the safety latch, slide the clasp leaf to the next notch, and it clicks into place as the notched teeth on the underside of the leaf index against a sprung lever. Fliplock is the fold-out diver's extension, adding 26mm of length for wear over a 7mm dive-suit cuff.

Together they give the 116600 the most adjustable Sea-Dweller bracelet of the modern line; the 16600's clasp had Fliplock alone. The 126600 keeps both on a 21mm-lug bracelet with a broader clasp.

Differences against the 126600 successor

The 126600 launched in 2017 as the 50th-anniversary Sea-Dweller. The differences against the 116600:

attribute	116600 (2014–17)	126600 (2017 onward)
Case diameter	40mm	43mm
Lug-to-lug	46.5mm	approximately 50mm
Date Cyclops	None	Sapphire Cyclops at 3
Dial text	"SEA-DWELLER" white only	"SEA-DWELLER" in red — single-red callback to the 1665
Movement	cal 3135, 48h, Parachrom Blu	cal 3235, 70h, Chronergy escapement, Syloxi balance, Superlative ±2s/day
Bracelet lug width	20mm	21mm (broader Glidelock clasp)
Bezel	Cerachrom black, platinum-coated graduations	same recipe, scaled to 43mm
Anniversary framing	none	50th anniversary of the Sea-Dweller (1967 prototype delivery)

The 126600 itself has Mark 1 and Mark 2 dial variants, early-run examples carrying a stick "1" in "1200m" with no coronet at 6, later-run examples a coronet at 6 and a refined "1". That divides 126600 collecting along a "Mark 1 premium" line, and it matters here only because the 116600 has no comparable in-life dial variants.

Market

Launch and during-production pricing

The USD 7,100 retail at the 2014 launch had climbed to about USD 10,000 on the 2018 secondary market. UK retail reached about GBP 10,000 by the 2017 discontinuation, against launch pricing of CHF 9,900 in Switzerland and EUR 8,500 in Europe.

Post-discontinuation curve

The post-discontinuation market climbed from approximately EUR 10,000 at the 2017 discontinuation to a peak of approximately EUR 17,000 in the 2021-22 cycle. The peak came as broader Rolex sport-line prices spiked across the 2020-22 window.

Current market (2025-26)

Aggregate dealer-market data as of May 2026 places median sale at USD 13,500 to 15,500, with 46 recorded sales in January 2026 and a median time-to-sell of 35.5 days, faster than 83 percent of tracked sport-line references. The 1-year price trend runs at -2.1 percent, the 5-year at -15.8 percent. Aggregator risk scoring puts the 116600 at 62 out of 100, driven by fixed inventory and the downward trend from the 2021-22 peak. Active asking prices on the major dealer markets sit at approximately USD 14,000 average, with a spread from USD 11,000 to USD 20,000. Full-set 2017 examples occupy the top of the range.

The 116600 trades at a meaningful premium to its CHF 9,900 launch price even after the correction from the 2021-22 peak. No singular auction-record headline lot exists; the reference is a current-modern collectible rather than an auction-podium reference.

Collector framing

The 116600 is the last 40mm Sea-Dweller. Every reference from the 1665 through the 16600 wore a 40mm case, the 116600 returned the line to that diameter for three years, and the 126600 broke the lineage in 2017 at 43mm. That alone is a collecting argument.

The case-and-spec mix adds to it. The 40mm Oyster at 1220 metres reads more tool than the 43mm 126600, while the Cerachrom bezel, Maxi dial, and 97200 Glidelock bracelet keep the watch contemporary on the wrist. The Cerachrom-vs-aluminum break against the 16600 sets the visual identity; the Parachrom Blu hairspring and 904L Oystersteel under the surface mark the engineering generation.

Taken together it reads as a bridge reference. The Cerachrom bezel and Chromalight lume come from the modern Rolex sport line, the no-Cyclops crystal and engraved caseback from the vintage Sea-Dweller idiom, the Parachrom Blu hairspring from the late-3135 era, and the case dimensions from the 16660 and 16600. Nothing in the 116600's spec sheet is new to Rolex on its own; the combination is.

Long-term wear reports describe the Cerachrom bezel as scratch-resistant in practice, the Chromalight lume as holding the rated eight hours of useful glow, and the 97200 bracelet as substantial enough on the wrist that the 15mm case thickness reads thinner than the number suggests. Rolex Service Centre overhauls run USD 800 to 1,000 standard, with full overhauls including crystal, bezel insert, and gasket replacement at USD 1,300 to 1,600.

Related references

• Sea-Dweller 16600 — Cal 3135 (1989–2008)
• Sea-Dweller 16660 — "Triple Six", First 4000ft (1978–1988)
• Sea-Dweller 1665 — Double Red, 'Great White' (1967–1983)

See also the Sea-Dweller family index, movement reference, bracelet & clasp guide, and serial numbers by year.

Sources

Primary and specialist

• Hodinkee editorial, "Reference Points: Understanding the Rolex Sea-Dweller", Hodinkee, 2018

Editorial and market

• Rolex Passion Report editorial, "Basel World 2014 Rolex News: Sea-Dweller Ref. 116600", Rolex Passion Report, 2014-03-20
• Monochrome Watches editorial, "The Sea-Dweller is Back: Introducing the Rolex Oyster Perpetual Sea-Dweller 4000 Ref. 116600", Monochrome, 2014-02-04
• SJX, "Up Close With the Rolex Sea-Dweller 4000 Ref. 116600", SJX Watches, 2014-06-23
• Monochrome Watches editorial, "Opinion: Why Rolex Sea-Dweller 116600 is the Best Modern Dive Watch", Monochrome, 2022-02-24
• KeepTheTime editorial, "KeepTheTime — Watch Identifier: Rolex 116600 Sea-Dweller 4000", KeepTheTime, 2014
• Fratello Watches editorial, "Fratello — Rolex Sea-Dweller 4000 Reference 116600", Fratello Watches
• Monochrome Watches editorial, "In-Depth: The History of the Rolex Sea-Dweller", Monochrome, 2025
• Time and Watches editorial, "Rolex Sea-Dweller 4000 Ref. 116600", Time and Watches, 2014-03
• forum community, "Rolex Forums — Sea-Dweller 4000 (116600) One Month Later (thread 461280)", Rolex Forums
• forum community, "Rolex Forums — 116600 vs 126600 (thread 763361)", Rolex Forums
• WatchCharts, "WatchCharts — Sea-Dweller 4000 116600 Market Index", WatchCharts
• Rolex Passion Report editorial, "Rolex Passion Report — The Evolution of Rolex Luminous (Tritium → Chromalight)", Rolex Passion Report