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Bob's Watches - The Pre-Owned Rolex Exchange
(800) 494-3708
1900 Quail St, Newport Beach, CA 92660
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Rolex Explorer II

The Rolex Explorer II is a sleek and stylish watch developed with a self-winding mechanical movement that was designed and manufactured by Rolex. First released in 1971, this new model features a more rugged look and feel compared to the original. One of the trademark features associated with the Explorer 2 is the 24-hour hand to display a second time zone, which is highlighted with as an Orange 4th hand. For additional models for sale, visit our Rolex watches page.

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About the Rolex Explorer II

In 1953, Rolex unveiled the Oyster Perpetual Explorer watch to honor the achievement of Sir Edmond Hillary and Tenzig Norgay, when they became the first humans to successfully reach the summit of Mount Everest. Designed as a tough timepiece for adventurers and built to be highly resistant to extreme conditions, the original Explorer featured a durable exterior fashioned from stainless steel, a highly legible dial with luminous details, and a shock-resistant self-winding mechanical movement.

Building upon the success of the original Explorer watch, Rolex introduced the Oyster Perpetual Explorer II in 1971 as a bigger, bolder, and more complex timepiece than its predecessor. Thanks to its date complication and prominent AM/PM indicator displayed by a 24-hour hand pointing to a fixed 24-hour bezel, the Rolex Explorer II was positioned as a tool watch for speleologists, volcanologists, polar explorers and any other adventurers who spend extended periods in darkness and can’t depend on the sun to tell night from day.

Whether for polar, mountaineering, or caving expeditions - or as an everyday luxury watch with fantastic durability and a highly useful set of features, the Rolex Explorer II is one of the most adventure-worthy Rolex models within the Oyster collection.


The history of the Rolex Explorer II began in 1971 with the launch of Explorer II ref. 1655 featuring a 38mm stainless steel case, a date display, a bright orange 24-hour hand, a fixed bezel with 24-hour graduations, and a stainless steel Oyster bracelet. The arrow shaped 24-hour hand (which is coupled to the traditional 12-hour hand) serves as a prominent day/night indicator by pointing to the current hour on the 24-hour scale engraved into the fixed bezel. Far from the simple design of the original Explorer, the Explorer II 1655 featured 24 lume plots on its dial for optimal legibility of its 24-hour scale in the dark. Due to the distinct shape of the 24-hour hand, the Explorer II ref. 1655 was nicknamed "Freccione" - a name derived from the Italian word for "arrow."

In the mid-1980s, Rolex replaced the reference 1655 with the Explorer II ref. 16550, which increased the case diameter of the Explorer II to 40mm but kept the classic Oyster bracelet. With an overall design that more closely resembled a GMT-Master II with a stainless steel bezel, the reference 16550 featured a dial layout with Mercedes-style hands and geometric-shaped hour markers (similar to most Rolex Professional Oyster watches), and a red 24-hour hand with a luminous arrow tip. Additionally, the new Caliber 3085 movement allowed the 24-hour hand to be set independently of the 12-hour hand, turning the Rolex Explorer II into a dual time watch. By the end of the 1980s, Rolex released Explorer II ref. 16570 with the updated Caliber 3185 movement.

In 2011, to celebrate the 40th anniversary of the Explorer II, Rolex introduced the larger 42mm Explorer II ref. 216570 featuring the Caliber 3187 movement with Rolex's high performance Paraflex shock absorbers. Additionally, the reference 216570 also marked the return of the bright orange 24-hour hand from the previous model, and also added a small additional splash of orange in the "Explorer II" name on the surface of the dial.


  • Explorer II 1655
  • Explorer II 16550
  • Explorer II 16570
  • Explorer II 216570
  • Rolex Explorer II Materials

Much like the original Explorer, as a tool watch developed specifically to withstand the toughest conditions, Rolex has only ever made Explorer II in stainless steel. Unlike many of Rolex's other professional watch collections, there have never been any two-tone or solid gold versions of the Rolex Explorer II. Additionally, the type of stainless steel used for the Explorer II has evolved over the years from 316L stainless steel to 904L stainless steel, to 'Oystersteel' - Rolex's own blend of 904L stainless steel that they now use in the construction of their watches.


While it is not a watch specifically intended for aquatic use, the Explorer II is still guaranteed waterproof to 100 meters (330 ft). This water resistance is achieved by the use of Rolex's Twinlock winding crown, which features two sealed zones for increased protection against moisture intrusion.


  • 38mm (1655)
  • 40mm (16550, 16570)
  • 42mm (216570)


While the dial of the original Rolex Explorer has remained largely unchanged, the dial of the Explorer II has changed more dramatically throughout the decades. The first iteration of the Explorer II, the reference 1655, was only available with a matte black dial and featured a prominent minute track with 24 lume plots to better correspond with its 24-hour display. Future Explorer II references offered the option of a white dial or a more traditional black dial, with the white Explorer II dials earning the "Polar" nickname due to their crisp coloring. Additionally, this second generation of Explorer II watches also brought with it a change to lume-filled geometric indexes with white gold surrounds - similar to the style of dial used on the Submariner, GMT-Master, and Sea-Dweller.

Much like other aspects of the watch, the luminescence used on the Explorer II evolved over the years, from radium to tritium (both radioactive materials), before moving onto photoluminescent materials such as LumiNova to Super-LumiNova. Today, the latest Explorer II references all use Chromalight on their hour markers and hands, which is Rolex's in-house luminescent material that emits a bright blue glow instead of green.


The Explorer II is a dual time watch with a date window, the one exception being the ref 1655, which had an AM/PM indicator as its 24-hour hand. The latest movement used to power the Explorer Ii inside the current-production reference 216470 is the Caliber 3187 that features Rolex blue Parachrom hairspring, which provides better resistance to magnetism and temperature variation, along with Rolex's new Paraflex shock absorbers for improved shock resistance and stability. Additionally, since 2015 Rolex mechanical movements boast an accuracy rating of -2/+2 seconds per day, which significantly exceeds the standards for COSC-rated chronometers.


  • Explorer II 1655: Caliber 1575
  • Explorer II 16550: Caliber 3085
  • Explorer II 16570: Caliber 3185, Caliber 3186
  • Explorer II 216570: Caliber 3187


Part of the appeal of the Rolex Explorer II is its high degree of functionality that it provides while still adhering to a relatively accessible price point compared to other Rolex Oyster Professional watches. With a rock-solid build, a date complication, and dual time functionality, the Explorer II offers a lot of practicality yet remains one of the more modestly-priced sports watches in the Rolex catalog.

Generally speaking, due to its larger size and more advanced functionality, the Explorer II is priced higher than the standard Rolex Explorer. The latest Rolex Explorer II models retail for just over $8,000, while older references can be purchased anywhere from $6,500 to $7,500 on the secondary market. However, if we're talking about vintage references or rare dial examples, the Rolex Explorer price range can quickly skyrocket well into the five-figure territory for well preserved examples.


From the very first Rolex Explorer models of the 1950s to the 42mm dual time Explorer II watches of today, exploration has been a part of Rolex's story for well over 80 years.

  • 1953 - Rolex launches the Explorer collection
  • 1971 – Rolex introduces the more advanced Explorer II collection
  • 1985 – The Rolex Explorer II grows to 40mm and becomes a dual time watch
  • 2011 – Rolex increases the size of Explorer II to 42mm


Throughout its production period, the Rolex Explorer II has grown from 38mm to 42mm in size, and has existed in a number of different references.

  • Reference 1655 (38mm)
  • Reference 16550 (40mm)
  • Reference 16570 (40mm)
  • Reference 216570 (42mm)

Celebrities Who Wear Rolex Explorer II Watches

While the Rolex Explorer II may not be as popular as some of Rolex's other sports watches like the Submariner and Daytona, there are still a number of famous individuals that embrace this tool watch dedicated to exploration.

  • Prince Harry
  • Jason Statham
  • Tom Hanks
  • Ellen DeGeneres
  • Orlando Bloom
  • Jordan Spieth
  • Tom Hardy
  • Ed Viesturs

Additionally, the Explorer II 1655 is nicknamed “Steve McQueen” but there's no evidence that the famous actor ever wore one. Instead, it is believed that the nickname came about as a result of a Rolex advertising campaign that featured McQueen around the same time; however even in the advertisements, the famous Hollywood actor is not wearing actually wearing a Rolex Explorer II watch.

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Bob's Watches is an independent watch dealer and is not sponsored by, associated with and/or affiliated with Rolex, S.A. Bob's Watches only sells pre-owned Rolex watches and provides its own warranties on the watches it sells. Rolex, www.rolex.com, is under no obligation to warranty-service watches sold by Bob's Watches. Rolex Datejust, Rolex Day Date President, Submariner, Presidential, Explorer, Sea Dweller, Super President, GMT Master, GMT, YachtMaster, Prince, Milgauss, MasterPiece, Air King, Cosmograph Daytona, and PearlMaster are all registered trademarks of the Rolex Corporation ( Rolex USA, Rolex S.A.) To buy a new Rolex watch, please visit rolex.com for a list of authorized Rolex dealers near you.
* Sales tax on Internet transactions is only collected on orders shipped to addresses in California or as otherwise required by law.