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. The 116600 walked the reference back to 40mm. Same Oyster diameter the 16660 and 16600 established, same 1220-metre depth rating, same helium escape valve at 9 o'clock — but with a Cerachrom ceramic bezel instead of aluminum, Parachrom Blu hairspring instead of the standard 3135 spring, Chromalight lume instead of Super-LumiNova, and a Maxi dial with 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. No mark generations. Among the shortest production runs of any modern Rolex sport reference, and the last 40mm Sea-Dweller before the 126600 took the line to 43mm.

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

The 116600 occupies a narrow position in the Sea-Dweller 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 closes the 116600 in turn. The 50th anniversary of the Sea-Dweller line (the 1665's 1967 prototype delivery to SEALAB 3) calls for a tribute reference, and Rolex builds it at 43mm with the red "SEA-DWELLER" callback to the 1665 Single Red. The 116600 becomes the last small-case Sea-Dweller, the only modern Sea-Dweller without a Cyclops or red text, and the only Sea-Dweller with the Cerachrom-aluminum-bezel-vs-aluminum-insert distinction inside its three-year window.

Inside that window, the 116600 has no mark generations, no transitional dial anomalies, and no factory-colourway variants. Single dial, single bracelet, single movement specification. The 116600 is the cleanest variant set in the entire Sea-Dweller line.

Production outline

Launch (Baselworld March 2014)

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

Production run (2014 to 2017)

Continuous production across three calendar years. AD allocation remained available until late 2016, then dried up as the discontinuation approached. The final 2017 AD allocations went to long-waitlist customers, with nine-month waits cited in forum coverage. Grey-market 2017 purchases at major retailers settled around mid-USD 8,000 by the discontinuation window. Final-year retail at AD reached approximately 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 happens here. Earlier 16600 examples were split — the Parachrom Blu rolled into the 3135 family progressively through the mid-2000s; the 116600 carries it from launch.

Specifications:

31 jewels
28,800 vph / 4 Hz
Approximately 48-hour power reserve
Quickset date, hacking seconds
COSC chronometer certified (pre-2015 standard — ±6 seconds per day; this is before the Superlative Chronometer 2015 re-certification at ±2 seconds per day that the 126600 receives)
Parachrom Blu hairspring — paramagnetic, shock-resistant
KIF Elastor shock absorbers (Paraflex variant on later production)
Free-sprung balance, full balance bridge

The cal 3135 architecture is otherwise unchanged from the 16600 generation. The 116600 inherits a movement that had been refined across two decades.

Dial

Single dial across the production run.

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. Mercedes hour hand is broader to match.

Lume technology is Chromalight — Rolex's proprietary alkaline-earth aluminate compound, brighter at peak emission than Super-LumiNova and emitting 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 — the long-standing Sea-Dweller no-Cyclops convention continues. The convention 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 no-Cyclops tradition stayed. The 126600 successor finally breaks 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

The 116600's signature feature. The bezel insert is 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 — 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.

The Cerachrom-vs-aluminum transition makes the 116600 visually distinct from every Sea-Dweller before it. The 16600 wore an aluminum insert; every earlier Sea-Dweller wore aluminum. The 126600 successor continues with Cerachrom.

Crystal and crown

Flat sapphire, no Cyclops, sitting slightly proud of the bezel edge. Triplock screw-down crown with triple-gasket sealing. The crown carries 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

Solid screw-down stainless steel caseback engraved with "ROLEX OYSTER" and twin coronets plus "ORIGINAL GAS ESCAPE VALVE" — the same engraved-caseback convention the 16600 carried. The Sea-Dweller's engraved caseback was a feature throughout the modern line and continues unchanged on the 116600. The 126600 successor keeps the engraving but with a thicker case profile.

Bracelet — 97200 with Glidelock and Fliplock

The 97200 Oyster bracelet — 904L Oystersteel, solid centre and end-links, brushed centres with polished bevels. Lug width 20mm matches the case. The clasp carries two extension systems:

Glidelock — 20mm of fine adjustment in 2mm increments across 5 positions. Toolless operation: lift the safety latch, slide the clasp leaf to the next notch, click into position. The notched teeth on the underside of the clasp leaf index against a sprung lever.
Fliplock — fold-out diver's extension adding 26mm of length (Wikipedia gives 27mm; Monochrome cites 26mm — print 26mm with attribution if cited). For wear over a 7mm dive-suit cuff.

The combined Glidelock and Fliplock gives the 116600 the most-adjustable Sea-Dweller bracelet through the modern line. The 16600's clasp had only the Fliplock; the 116600 adds the fine-adjust Glidelock. The 126600 keeps both but on a 21mm-lug bracelet with broader clasp.

Differences against the 126600 successor

The 126600 launched in 2017 as the 50th-anniversary Sea-Dweller. The deltas 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 MK1 and MK2 dial variants — early-run examples with a stick "1" in "1200m" and no coronet at 6, later-run with a coronet at 6 and refined "1" — relevant as a "MK1 premium" line because the 116600 has no comparable in-life dial variants.

Market

Launch and during-production pricing

USD 7,100 retail at 2014 launch climbed to approximately USD 10,000 by 2018 secondary market. UK retail reached approximately GBP 10,000 by 2017 discontinuation. CHF 9,900 launch in Switzerland, 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's three-year production has produced three recurring collector readings. The first treats it as the last 40mm Sea-Dweller: every Sea-Dweller 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. The second treats it as a Goldilocks tool watch: the 40mm case at 1220 metres reads more tool than the 43mm 126600, while the Cerachrom bezel and Maxi dial keep the watch modern enough for daily wear. The third treats it as a bridge generation, with the Cerachrom bezel of modern Rolex but the no-Cyclops convention of vintage Sea-Dweller, the Parachrom Blu hairspring of the late-3135 era but the case dimensions of the 16660 and 16600.

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.