Reference:Movements

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Rolex movements

Every Rolex caliber that powered a pre-2020 Daytona, Submariner, GMT-Master, Explorer, or Oyster Perpetual reference is catalogued below: spec, production span, and reference fitments. The lineage threads four arcs. The manual-wind chronograph line ran from the Valjoux-72-derived cal 72 through cal 727 into 1988. The automatic chronograph started with the Zenith-derived cal 4030 and finished with the in-house cal 4130 in 2000. The sport time-only family travelled from the bumper-style A-series through the 1030 / 1530 platform and into the 30xx / 31xx series. The Oysterquartz sits outside that mechanical line entirely, from 1977. Lume material is per-dial and per-era rather than per-caliber and is not tracked here; see the per-reference dial map for that.

Caliber index

Caliber	Type	Base	Years	Jewels	Frequency (vph)	Power reserve (h)	Hack	Quickset	GMT hand	Chronometer	Families	Notes
72	chronograph	Valjoux 72	1960–65	17	18,000	48	no	–	–	no	Daytona	Bare Valjoux 72 in 6234 / early 6238
72A	chronograph	Valjoux 72	early-to-mid 1960s	17	18,000	48	no	–	–	no	Daytona	Rolex-finished intermediate; thin documentation
72B	chronograph	Valjoux 72	1962–65	17	18,000	48	no	–	–	no	Daytona	Final pre-722 Valjoux 72 in early 6238
722	chronograph	Valjoux 72	1963–69	17	18,000	48	no	–	–	no	Daytona	First Rolex-stamped Valjoux 72; 6239 / 6241
722-1	chronograph	Valjoux 72	1969–70	17	18,000	48	no	–	–	no	Daytona	Transitional 722 revision into the 727 era
727	chronograph	Valjoux 72	1970–88	17	21,600	48	no	–	–	no	Daytona	Higher-beat Valjoux 72; 6262 / 6263 / 6264 / 6265
4030	chronograph	Zenith El Primero 400	1988–2000	31	28,800	54	no	–	–	yes	Daytona	Modified El Primero in the Zenith Daytona; modification list disputed
4130	chronograph	in-house	2000–present	44	28,800	72	no	–	–	yes	Daytona	First in-house Rolex chronograph; vertical clutch
A260	automatic	in-house	1953–55	17	18,000	36	no	no	–	no	Submariner, Oyster Perpetual	First-generation Sub 6204 / 6205
A296	automatic	in-house	1953–56	17	18,000	36	no	no	–	no/yes	Submariner, Explorer, Oyster Perpetual	Big Crown 6200; Explorer 6098 / 6150 (non-COSC) / 6350 (COSC)
1030	automatic	in-house	1955–62	25	18,000	42	no	no	–	yes	Submariner, Explorer, Oyster Perpetual	Mid-1950s Sub 6536 / 6536-1 / 6538; Explorer 6610
1036	automatic	in-house	1954–59	25	18,000	42	no	no	synchronized	yes	GMT-Master	First GMT caliber; bakelite-bezel 6542
1065	automatic	in-house	1956–59	25	18,000	42	no	no	synchronized	yes	GMT-Master	Late-6542 GMT caliber
1530	automatic	in-house	1957–65	26	18,000	42	no	no	–	yes	Submariner, Oyster Perpetual	Foundation of the 15xx family; early 5512 / 5513
1520	automatic	in-house	1965–90	26	18,000	42	no	no	–	no	Submariner	Non-chronometer twin to 1570; late 5513 / 5514 / 5517
1560	automatic	in-house	1959–65	26	18,000	42	no	no	–	yes	Submariner, GMT-Master, Explorer	Cross-family chronometer; mid 5512 / 1675 / 1016
1565	automatic	in-house	1959–65	25	18,000	42	no	no	synchronized	yes	GMT-Master	Early 1675; "caller" GMT
1570	automatic	in-house	1965–80	26	19,800	44	late only	no	–	yes	Submariner, Explorer	Higher-beat 1560; hack added mid-life
1575	automatic	in-house	1965–80	25	19,800	50	no	no	synchronized	yes	Submariner, GMT-Master, Explorer	1680 / late 1675 / Explorer II 1655
3000	automatic	in-house	1989–99	27	28,800	48	yes	no	–	yes	Submariner, Explorer, Oyster Perpetual	First 28,800 vph time-only; 14060 / 14270
3035	automatic	in-house	1977–88	27	28,800	48	yes	yes	–	yes	Submariner	First quickset Sub; 16800 / 168000 / 16808 / 16803
3075	automatic	in-house	1979–88	27	28,800	48	yes	yes	synchronized	yes	GMT-Master	16750 / 16753 / 16758
3085	automatic	in-house	1983–88	27	28,800	48	yes	yes	independent	yes	GMT-Master, Explorer	First independent 24-hand; 16760 "Fat Lady" / 16550 Exp II
3130	automatic	in-house	1999–2018	31	28,800	48	yes	–	–	yes	Submariner, Explorer, Oyster Perpetual	Time-only successor to 3000; 14060M / 114060 / 114270
3132	automatic	in-house	2010–~2020	31	28,800	48	yes	–	–	yes	Explorer, Oyster Perpetual	3130 with Parachrom + Paraflex; 214270
3135	automatic	in-house	1988–2018	31	28,800	48	yes	yes	–	yes	Submariner	30-year workhorse; 16610 / 16613 / 16618 / 116610-series
3175	automatic	in-house	1989–99	31	28,800	48	yes	yes	synchronized	yes	GMT-Master	16700 — last "caller" GMT
3185	automatic	in-house	1989–~2007	31	28,800	48	yes	yes	independent	yes	GMT-Master, Explorer	16710 / 16713 / 16718 / 16570
3186	automatic	in-house	2007–19	31	28,800	50	yes	yes	independent	yes	GMT-Master, Explorer	Parachrom hairspring; 116710LN / BLNR / 116719BLRO / late 16710
5035	quartz	in-house	1977–2001	11	32 kHz	–	yes	yes	–	yes	Oyster Perpetual	Oysterquartz 17000 / 17013 / 17014
5055	quartz	in-house	1977–2001	11	32 kHz	–	yes	yes	–	yes	Oyster Perpetual	Oysterquartz Day-Date 19018 / 19028

Manual-wind chronograph lineage

The manual-wind Daytona line stays on Valjoux 72 architecture for its full first chapter. Cal 72 belongs to the 6234 and earliest 6238. Cal 722 is the first Rolex-stamped version and powers the original 6239 plus the 6240 and 6241 generation. Cal 722-1 bridges into the higher-beat cal 727, which lifts the rate from 18,000 to 21,600 vph and then runs through the 6262, 6264, 6263, and 6265 until the manual-wind era ends in 1988.

Automatic chronograph lineage

Cal 4030 is the most disputed Daytona movement spec, but the working outline is clear. It is Rolex's heavily reworked Zenith El Primero base, launched in 1988 with the 16520 and used for twelve years. Serious sources agree on the important points: 28,800 vph, free-sprung Breguet balance, no date, and major Rolex reworking. They diverge on the size of the modification list and on power reserve, usually quoted as 52 or 54 hours. It was the last foreign-sourced caliber in Rolex's modern line.

Cal 4130 launched in 2000 with the 116520 and was Rolex's first fully in-house chronograph movement. The collector-level points are simple: vertical clutch, column wheel, 72-hour reserve, and fewer parts than the cal 4030 it replaced. It powered the whole pre-ceramic in-house Daytona generation and carried forward into the 116500LN.

Sport time-only lineage (Submariner, GMT-Master, Explorer)

The sport time-only line starts with the A-series bumper automatics. Cal A260 powers the first 6204 and 6205. Cal A296 carries the 6200 and the earliest Explorers, with the 6150 and 6350 split showing the same movement in non-COSC and COSC form. Cal 1030 takes over from 1955 and underpins the mid-1950s Submariner and Explorer generation.

The 15xx family is Rolex's long middle chapter. Cal 1530 anchors early 5508, 5510, 5512, and 5513 production. Cal 1520 is the non-chronometer twin used in late 5513, 5514, and 5517. Cal 1560 and 1570 define the chronometer side of the Submariner, GMT-Master, and Explorer lines. Cal 1575 adds the date or GMT module, which is why it shows up in the 1680, late 1675, and the 1655 Explorer II.

The GMT branch is easiest read in three steps. Cal 1036 and 1065 belong to the bakelite 6542 era and keep the 24-hour hand linked to the main hour hand. Cal 1565, 1575, and 3075 carry that synchronized style through the 1675 and 16750 generation. Cal 3085 is the break: the first independently jumping local hour hand, used in the 16760 and 16550. Cal 3185 then defines the long 16710 run, and cal 3186 adds Parachrom for late 16710 and the ceramic-era GMT line. The 16700 keeps the old synchronized caller layout alive on cal 3175 until 1999.

The modern time-only line settles on the 31xx family. Cal 3000 is the first 28,800 vph no-date movement of the era, used in the 14060 and 14270. Cal 3130 succeeds it in the 14060M, 114060, 114270, and later Oyster Perpetual watches. Cal 3132 adds Parachrom and Paraflex for the 214270. Cal 3135 is the date counterpart and the dominant modern Rolex workhorse across the Submariner Date and other steel sports references.

Oyster Perpetual lineage

The Oyster Perpetual line shares most of its movement story with the sport watches. Bubbleback and early Oyster references use the 520, 620, 630, and A-series automatics, which are documented on the Bubbleback family page. Mid-century OP shares the A296 and 1030 with early Submariner and Explorer references. Later no-date OP references move through 1530, 1560, and 1570, then into cal. 3000, 3130, and 3132 in the same sequence seen on the no-date Submariner and Explorer.

The Oysterquartz sits outside the mechanical line. Cal 5035 and 5055 launched in 1977 as Rolex's in-house quartz calibers and ran through 2001. Total output stayed small, under about 25,000 watches. Cal 5035 powers the Oysterquartz Datejust and Oyster Perpetual references; cal 5055 powers the Day-Date Oysterquartz.

Sources

• Revolution — A Movement in History: The Zenith-driven Rolex Daytona (Ross Povey, 2018)
• Hodinkee — A Vintage Watch Nerd's Critical Dissection of the Rolex Daytona, Part 1 (Paul Boutros, 2012)
• Hodinkee — A Vintage Watch Nerd's Critical Dissection of the Rolex Daytona, Part 2 (Paul Boutros, 2013)
• Monochrome — In-Depth: The History of the Rolex Daytona (Erik Slaven, 2024)
• Monochrome — History of the Rolex Submariner, Part 1 (Tom Mulraney, 2020)
• Monochrome — History of the Rolex Submariner, Part 2 (Tom Mulraney, 2020)
• Monochrome — In-Depth: The History of the Rolex GMT-Master and GMT-Master II
• Monochrome — The History of the Rolex Explorer (Frank Geelen, 2024)
• Monochrome — In-Depth: The History of the Rolex Explorer II
• Monochrome — Youngtimer Case Study, the Rolex Explorer 14270 (Frank Geelen, 2020)
• Monochrome — Rolex Explorer 214270 In-Depth Review (Brice Goulard, 2016)
• Hodinkee — A Comprehensive Collector's Guide To The Rolex Explorer I (Jon Bues, 2022)
• WatchTime — Tracking the Rolex Daytona: A 55-Year History
• Revolution — The Rolex "John Player Special" Paul Newman Daytona Ref. 6241 (Bob Ridley, 2017)
• A Collected Man — Is the Rolex Pre-Daytona a Forgotten Classic? (Russell Sheldrake, 2020)
• Fratello — Why I Bought The Rolex Cosmograph Daytona Reference 116520 (Ben Hodges, 2021)
• Fratello — Rolex Submariner 14060M Review
• Fratello — Rolex Submariner 114060 Review (2019)
• Fratello — Ceramic Bezel close-up of the Rolex GMT-Master II ref. 116710LN
• Sotheby's — Submariner Ref 6536/1, Stainless Steel Automatic With Bracelet, Circa 1957
• Sotheby's — Submariner Ref. 6538, Stainless Steel With 4-Line Tropical Dial, Circa 1958
• The Vintage Rolex Field Manual — Colin A. White, Morning Tundra