Reference:explorer-ii - Revision history

Admin: De-orphan: forward-link to 216570

2026-04-30T04:15:53Z

De-orphan: forward-link to 216570

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	The 42mm ceramic-era successors continue the line beyond the vintage and neo-vintage generations.		The 42mm ceramic-era successors continue the line beyond the vintage and neo-vintage generations.

	* ~~'''~~216570~~'''~~ (2011–2021) — 42mm case, cal. 3187, reintroduced orange 24-hour hand		* [[Reference:216570\|216570]] (2011–2021) — 42mm case, cal. 3187, reintroduced orange 24-hour hand
	* '''226570''' (2021–present) — cal. 3285, current production		* '''226570''' (2021–present) — cal. 3285, current production

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	The Explorer II is the fixed-bezel 24-hour sibling to the Explorer I. Rolex launched it in 1971 for cave and polar use, and every Explorer II since has kept the 24-hour hand and bezel.		The Explorer II is the fixed-bezel 24-hour sibling to the Explorer I. Rolex launched it in 1971 for cave and polar use, and every Explorer II since has kept the 24-hour hand and bezel.

	~~The fast map is simple~~: 1655 ~~first~~ with linked-hand day-night logic, 16550 ~~second~~ with true GMT function, 16570 as the long middle run, 42mm 216570 from 2011, and 226570 current.		Five references make up the line: the 1655 with linked-hand day-night logic, the 16550 with the first true GMT function, the 16570 across the long middle run, the 42mm 216570 from 2011, and the 226570 in current production.

	== The first Explorer II (1971–1984) ==		== The first Explorer II (1971–1984) ==
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	== Dial variant highlights ==		== Dial variant highlights ==

	~~The Explorer II has a dense per-reference variant~~ taxonomy ~~that is worth scanning~~ in ~~aggregate~~:		Variant taxonomy across the line, in brief:

	* '''1655 Mark dials''' — Mk1 (large crown), Mk2 (Frog Foot), Mk3 (Rail Dial), Mk4 (taller crown, T SWISS <25 T serif), Mk5 (sans-serif). Two Beyeler service dials also exist.		* '''1655 Mark dials''' — Mk1 (large crown), Mk2 (Frog Foot), Mk3 (Rail Dial), Mk4 (taller crown, T SWISS <25 T serif), Mk5 (sans-serif). Two Beyeler service dials also exist.
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	== Cross-references ==		== Cross-references ==

	The Explorer II is the sibling of the [[Reference:explorer\|Explorer I]] line and shares ~~caliber~~ and ~~architectural DNA~~ with the [[Reference:gmt-master\|GMT-Master]] line. The caliber 1575 on the 1655 is ~~identical to~~ the caliber 1575 on the GMT-Master 1675, configured differently (linked-hand vs independent-hour). The caliber 3085 on the 16550 is ~~identical to~~ the caliber 3085 on the GMT-Master II 16760.		The Explorer II is the sibling of the [[Reference:explorer\|Explorer I]] line and shares calibers and case architecture with the [[Reference:gmt-master\|GMT-Master]] line. The caliber 1575 in the 1655 is the same caliber 1575 used in the GMT-Master 1675, configured differently: linked-hand on the Explorer II, independent-hour on the GMT-Master. The caliber 3085 in the 16550 is the same caliber 3085 that powered the GMT-Master II 16760.

	== Sources ==		== Sources ==

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	* '''1655 Mark dials''' — Mk1 (large crown), Mk2 (Frog Foot), Mk3 (Rail Dial), Mk4 (taller crown, T SWISS <25 T serif), Mk5 (sans-serif). Two Beyeler service dials also exist.		* '''1655 Mark dials''' — Mk1 (large crown), Mk2 (Frog Foot), Mk3 (Rail Dial), Mk4 (taller crown, T SWISS <25 T serif), Mk5 (sans-serif). Two Beyeler service dials also exist.
	* '''16550 cream / rail dial''' — a subset of Polar white dials aged to cream through a factory paint defect Rolex later corrected. Rail-dial sub-variant has the C of CHRONOMETER aligned vertically over the C of CERTIFIED.		* '''16550 cream / rail dial''' — a subset of Polar white dials aged to cream through a factory paint defect Rolex later corrected. Rail-dial sub-variant has the C of CHRONOMETER aligned vertically over the C of CERTIFIED.
	* '''16570 Swiss-only''' — ~~approximately~~ 5 percent of production, covering the 1998–1999 window when the dial carried Luminova lume but kept the older SWISS (not SWISS MADE) printing.		* '''16570 Swiss-only''' — about 5 percent of production, covering the 1998–1999 window when the dial carried Luminova lume but kept the older SWISS (not SWISS MADE) printing.

	== Cross-references ==		== Cross-references ==

Admin: Normalize Field Manual citation: ''The Vintage Rolex Field Manual'' — Colin A. White, Morning Tundra

2026-04-27T04:40:17Z

Normalize Field Manual citation: ''The Vintage Rolex Field Manual'' — Colin A. White, Morning Tundra

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	* [https://millenarywatches.com/rolex-caliber-3085/ Rolex Caliber 3085 Complete Guide] — Millenary Watches		* [https://millenarywatches.com/rolex-caliber-3085/ Rolex Caliber 3085 Complete Guide] — Millenary Watches
	* [https://www.beyondthedial.com/post/collector-guide-the-rolex-explorer-ii-all-references-in-detail/ Collector Guide: The Rolex Explorer II — All References in Detail] — Beyond The Dial		* [https://www.beyondthedial.com/post/collector-guide-the-rolex-explorer-ii-all-references-in-detail/ Collector Guide: The Rolex Explorer II — All References in Detail] — Beyond The Dial
	* The Vintage Rolex Field Manual — Morning Tundra		* ''The Vintage Rolex Field Manual'' — Colin A. White, Morning Tundra

	[[Category:Explorer II]]		[[Category:Explorer II]]
	[[Category:Family Index]]		[[Category:Family Index]]

Admin: Tighten family page for faster reading

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Tighten family page for faster reading

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	== Rolex Explorer II ==		== Rolex Explorer II ==

	The Explorer II ~~launched in 1971 as the sister reference to the Explorer I. Where the Explorer I was a simple three-hand time-only watch built for mountain expeditions,~~ the ~~Explorer II added a~~ fixed 24-~~hour~~ bezel ~~and an orange~~ 24-hour ~~hand for speleologists, polar expeditioners, and anyone operating in conditions where ambient light could not be trusted~~ to ~~tell day from night. The 24-hour complication is what separates~~ the ~~line from its~~ Explorer I ~~sibling~~, and every Explorer II ~~from 1971 to~~ the ~~present has retained it~~.		The Explorer II is the fixed-bezel 24-hour sibling to the Explorer I. Rolex launched it in 1971 for cave and polar use, and every Explorer II since has kept the 24-hour hand and bezel.

	The ~~line runs across five references in total. The~~ 1655 ~~Freccione is the original,~~ with a linked-hand ~~caliber 1575 that reads the 24-hour function as a~~ day-night ~~indicator. The~~ 16550 ~~introduced a~~ true ~~independent-hour~~ GMT function ~~on caliber 3085 in 1985. The~~ 16570 ~~took that architecture through a twenty-one-year~~ run ~~from 1989 to 2010. The~~ 42mm 216570 ~~arrived in~~ 2011 and ~~reintroduced the orange 24-hour hand of the 1655 on a modern ceramic-free case. The~~ current ~~226570 replaced it in 2021~~.		The fast map is simple: 1655 first with linked-hand day-night logic, 16550 second with true GMT function, 16570 as the long middle run, 42mm 216570 from 2011, and 226570 current.

	== The first Explorer II (1971–1984) ==		== The first Explorer II (1971–1984) ==

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	! Caliber !! Frequency !! Power reserve !! 24-hour function !! Used in !! Notes		! Caliber !! Frequency !! Power reserve !! 24-hour function !! Used in !! Notes
	\|-		\|-
	\| 1575 GMT \|\| 19,800 vph \|\| ~48 hr \|\| linked to hour hand \|\| 1655 \|\| Shared with GMT-Master 1675; 24-hour hand advances with hour hand, ~~functions~~ as day-night indicator		\| 1575 GMT \|\| 19,800 vph \|\| ~48 hr \|\| linked to hour hand \|\| 1655 \|\| Shared with GMT-Master 1675; 24-hour hand advances with hour hand, works as day-night indicator
	\|-		\|-
	\| 3085 \|\| 28,800 vph \|\| 48 hr (disputed: some sources say 42 hr) \|\| independent-hour \|\| 16550 \|\| First Explorer II with true GMT; shared with GMT-Master II 16760 "Fat Lady"; 6.3mm thick		\| 3085 \|\| 28,800 vph \|\| 48 hr (disputed: some sources say 42 hr) \|\| independent-hour \|\| 16550 \|\| First Explorer II with true GMT; shared with GMT-Master II 16760 "Fat Lady"; 6.3mm thick

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	== Current-production successors ==		== Current-production successors ==

	The 42mm ceramic-era successors ~~fall outside~~ the ~~pre-2020~~-~~discontinued scope that BezelBase covers. They are listed here for line continuity only, without article links~~.		The 42mm ceramic-era successors continue the line beyond the vintage and neo-vintage generations.

	* '''216570''' (2011–2021) — 42mm case, cal. 3187, reintroduced orange 24-hour hand		* '''216570''' (2011–2021) — 42mm case, cal. 3187, reintroduced orange 24-hour hand

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	\|}		\|}

	== Current-production successors ~~(out of scope)~~ ==		== Current-production successors ==

	The 42mm ceramic-era successors fall outside the pre-2020-discontinued scope that BezelBase covers. They are listed here for line continuity only, without article links.		The 42mm ceramic-era successors fall outside the pre-2020-discontinued scope that BezelBase covers. They are listed here for line continuity only, without article links.

Admin: Create Explorer II family index page

2026-04-20T00:37:29Z

Create Explorer II family index page

New page

{{#seo:
|title=Rolex Explorer II — Complete Reference Guide — BezelBase
|description=Every Rolex Explorer II reference from the 1971 Freccione 1655 through the 16550, 16570, 216570, and current 226570. Production histories, dial variants, Mark taxonomies, movement specs, and collector context.
|keywords=Rolex Explorer II, 1655, Freccione, 16550, cream dial, 16570, Polar, 216570, 226570, vintage Rolex, 24-hour GMT
|type=article
}}

== Rolex Explorer II ==

The Explorer II launched in 1971 as the sister reference to the Explorer I. Where the Explorer I was a simple three-hand time-only watch built for mountain expeditions, the Explorer II added a fixed 24-hour bezel and an orange 24-hour hand for speleologists, polar expeditioners, and anyone operating in conditions where ambient light could not be trusted to tell day from night. The 24-hour complication is what separates the line from its Explorer I sibling, and every Explorer II from 1971 to the present has retained it.

The line runs across five references in total. The 1655 Freccione is the original, with a linked-hand caliber 1575 that reads the 24-hour function as a day-night indicator. The 16550 introduced a true independent-hour GMT function on caliber 3085 in 1985. The 16570 took that architecture through a twenty-one-year run from 1989 to 2010. The 42mm 216570 arrived in 2011 and reintroduced the orange 24-hour hand of the 1655 on a modern ceramic-free case. The current 226570 replaced it in 2021.

== The first Explorer II (1971–1984) ==

{| class="wikitable" style="width:100%;"
|-
! Reference !! Production !! Movement !! Case !! Key distinction
|-
| [[Reference:1655|1655]] || 1971–1984 || Cal. 1575 GMT || 40mm SS, acrylic || Freccione orange straight/lollipop hand; 5 Mark dials + 2 service dials; linked-hand 24-hour; fixed engraved steel bezel
|}

== The transitional reference (1985–1989) ==

{| class="wikitable" style="width:100%;"
|-
! Reference !! Production !! Movement !! Case !! Key distinction
|-
| [[Reference:16550|16550]] || 1985–1989 || Cal. 3085 || 40mm SS, sapphire || First sapphire; first independent-hour GMT; black or Polar white dial; cream/rail dial paint-defect variant
|}

== The long-run modern reference (1989–2010) ==

{| class="wikitable" style="width:100%;"
|-
! Reference !! Production !! Movement !! Case !! Key distinction
|-
| [[Reference:16570|16570]] || 1989–2010 || Cal. 3185, then 3186 late || 40mm SS, sapphire || Four internal versions: V1 tritium, V2 Swiss-only, V3 Super-LumiNova, V4 no-holes case plus cal 3186; black or Polar white; SRR military limited edition 2007
|}

== Current-production successors (out of scope) ==

The 42mm ceramic-era successors fall outside the pre-2020-discontinued scope that BezelBase covers. They are listed here for line continuity only, without article links.

* '''216570''' (2011–2021) — 42mm case, cal. 3187, reintroduced orange 24-hour hand
* '''226570''' (2021–present) — cal. 3285, current production

== Movement progression ==

{| class="wikitable"
|-
! Caliber !! Frequency !! Power reserve !! 24-hour function !! Used in !! Notes
|-
| 1575 GMT || 19,800 vph || ~48 hr || linked to hour hand || 1655 || Shared with GMT-Master 1675; 24-hour hand advances with hour hand, functions as day-night indicator
|-
| 3085 || 28,800 vph || 48 hr (disputed: some sources say 42 hr) || independent-hour || 16550 || First Explorer II with true GMT; shared with GMT-Master II 16760 "Fat Lady"; 6.3mm thick
|-
| 3185 || 28,800 vph || ~50 hr || independent-hour || 16570 || Successor to 3085 with minor revisions; ran through most of the 16570
|-
| 3186 || 28,800 vph || ~50 hr || independent-hour || 16570 (late 2006+) || Added blue Parachrom hairspring; fixed the 3185 GMT-hand wobble
|}

== Dial variant highlights ==

The Explorer II has a dense per-reference variant taxonomy that is worth scanning in aggregate:

* '''1655 Mark dials''' — Mk1 (large crown), Mk2 (Frog Foot), Mk3 (Rail Dial), Mk4 (taller crown, T SWISS <25 T serif), Mk5 (sans-serif). Two Beyeler service dials also exist.
* '''16550 cream / rail dial''' — a subset of Polar white dials aged to cream through a factory paint defect Rolex later corrected. Rail-dial sub-variant has the C of CHRONOMETER aligned vertically over the C of CERTIFIED.
* '''16570 Swiss-only''' — approximately 5 percent of production, covering the 1998–1999 window when the dial carried Luminova lume but kept the older SWISS (not SWISS MADE) printing.

== Cross-references ==

The Explorer II is the sibling of the [[Reference:explorer|Explorer I]] line and shares caliber and architectural DNA with the [[Reference:gmt-master|GMT-Master]] line. The caliber 1575 on the 1655 is identical to the caliber 1575 on the GMT-Master 1675, configured differently (linked-hand vs independent-hour). The caliber 3085 on the 16550 is identical to the caliber 3085 on the GMT-Master II 16760.

== Sources ==

* [https://monochrome-watches.com/history-rolex-explorer-ii-adventure-watch-gmt-1655-16550-16570-216570-226570-in-depth/ In-Depth: The History of the Rolex Explorer II, The Ultimate Adventure Watch] — Monochrome
* [https://revolutionwatch.com/tooled-rolex-explorer-ii-reference-1655/ Tooled Up: The Rolex Explorer II Reference 1655] — Ross Povey, Revolution
* [https://rolexpassionreport.com/2867/ Mr Rolex Orange Hand, Reinhold Messner and Sir Edmund Hillary's Original Vintage Explorer II ref 1655] — Philipp Stahl, Rolex Passion Report
* [https://www.europeanwatch.com/blog/rolex-explorer-ii-reference-16550-review Spelunking Into the Details: The Rolex Explorer II Reference 16550] — Tony Traina, European Watch Co.
* [https://www.fratellowatches.com/buying_guide_different_versions_rolex_explorer_ii_16570/ Buyer's Guide: Explorer II Ref. 16570, All Variations] — Jorg Weppelink, Fratello
* [https://italianwatchspotter.com/rolex-ref-1655-a-complete-guide/?lang=en The Rolex Explorer II Ref. 1655: A Complete Guide] — Andrea David, Italian Watch Spotter
* [https://italianwatchspotter.com/rolex-explorer-ii-paragone/?lang=en Rolex Explorer II 16550 vs 16570] — Alessandro Metelli, Italian Watch Spotter
* [https://quillandpad.com/2018/06/15/exceptional-movements-in-history-rolex-caliber-1575-the-watchmakers-watch/ Exceptional Movements In History: Rolex Caliber 1575] — Quill & Pad
* [https://millenarywatches.com/rolex-caliber-3085/ Rolex Caliber 3085 Complete Guide] — Millenary Watches
* [https://www.beyondthedial.com/post/collector-guide-the-rolex-explorer-ii-all-references-in-detail/ Collector Guide: The Rolex Explorer II — All References in Detail] — Beyond The Dial
* The Vintage Rolex Field Manual — Morning Tundra

[[Category:Explorer II]]
[[Category:Family Index]]