Good morning {{first_name|Reader}}.

The Rolex Explorer II has changed a lot in fifty-plus years, but the 226570 is the reference that finally makes the whole story make sense. It looks and wears like a modern watch, but the core cave-watch brief from 1971 is still beating inside it.

To understand why, you have to walk the full Rolex Explorer II history. From the 1655 Freccione that started it all to the 226570 sitting on my wrist as I type this.

My Explorer II story started at the Berkshire Mall outside of Reading, Pennsylvania, sometime in the early 2000s. I remember seeing a white-dial Explorer II in a display case, and it stopped me cold. When I got home, I fired up our dial-up internet and pulled up the Rolex website to stare at it. I'm pretty sure I even printed out a black and white picture on our printer, because that's what you did back then when you wanted to hold onto something.

The white dial popped. The steel bezel popped. And the word "Explorer" did exactly what it was supposed to do. It made my teenage brain think about going out and doing something that felt like an adventure.

I think I told someone about it. They laughed. The idea of owning a Rolex seemed unrealistic, unattainable, the kind of thing that happened to other people but never to kids like me.

That watch would almost certainly have been a 40mm ref. 16570, the generation that took the Explorer II out of pure specialist territory and turned it into a versatile everyday steel GMT with a fixed bezel. I wasn't cave diving, and I'm still not, but life itself has been an adventure. Army, moves, kids, Alaska. The idea that you don't need a glacier or a cavern to "qualify" for an Explorer II stuck with me.

Fast forward to May 2024. I walked out of an AD in Anchorage, Alaska, with a 226570 on my wrist. I'd never touched an Explorer II before that moment. Never tried on a 16570, never handled a 216570, never seen a 1655 in person. Everything I knew came from research, from staring at photos, from that printed black-and-white picture I'd carried in my head for over two decades.

There's something kind of sweet about that. Maybe even romantic. The first Explorer II I ever touched was the one I bought.

Over fifty years, the Explorer II has stayed weird in the best way. The short version of the lineage looks like this.

The original 39mm "Freccione" was built for speleologists, the cave explorers who needed a bright 24-hour hand and fixed steel 24-hour bezel to tell day from night when living in darkness. It is the foundational reference. Everything that followed is downstream of this one.

The Explorer II grew to 40mm, gained sapphire crystal and an upgraded movement, and added the option of a white dial. This nudged it toward a more general dual-time tool watch while keeping the fixed bezel and 24-hour scale. Short production run, which is part of why it has become a quiet collector favorite.

The long-running 40mm workhorse, with black or white dials, calibres 3185 and 3186, and lume evolving from tritium to Luminova to Super-LumiNova. The 16570 turned the Explorer II into the quiet choice for people who wanted a steel GMT that wasn't a GMT-Master II. Twenty-two years of production means there is real variation across this reference, which is part of what makes it so interesting to collect.

For the model's 40th anniversary, Rolex upsized to 42mm, brought back a big orange 24-hour hand, and went with a maxi dial and larger case using calibre 3187. This is where the Explorer II staked out a bolder modern tool-watch presence and started looking like the watch we know today.

The current generation marks the 50th anniversary with a refined 42mm case and bracelet, upgraded calibre 3285 with 70-hour reserve, and subtle dial and lume updates while keeping the fixed steel bezel and orange 24-hour hand as its signature.

Taken together, the Rolex Explorer II history is one long attempt to answer the same question. How do you build a steel watch that can keep you oriented in hostile conditions, without becoming just another shiny sports Rolex?

The original Explorer II brief was simple. Help people who live in darkness tell day from night. That's why the 1655 used a bright 24-hour hand and fixed 24-hour bezel. You always knew whether you were in the first or second 12 hours of the day.

On my 226570, that DNA is still obvious. The orange GMT hand and the 12 o'clock marker echo the original 1655 design language. Visually, you can draw a straight line between the first cave watch and this modern reference. One reasonable way to describe the 226570 is as a modern 1655. Same fixed steel 24-hour bezel concept, same emphasis on high-contrast legibility, but with all the movement, bracelet, and lume upgrades you would expect in 2025.

I've never actually used the 24-hour hand as a strict day/night indicator in a cave. The only times I had to go into a bunker, because other human beings were shooting something at me, I didn't own this watch yet. But I do use the GMT hand daily to track another time zone, usually GMT time when I'm home or whichever zone matters for work.

My job involves a lot of travel and coordination across time zones. I'm often in situations where I cannot have my cell phone to use as a clock, which is another reason I wear this watch. That second timezone capability isn't just a novelty. It's practical, necessary, built into my day.

In Alaskan winters when the daylight hours are minimal and the days blur together, the 24-hour scale and bright hand still feel true to the original idea. Helping you orient yourself when your environment isn't doing you any favors. Even in the summer when Alaska has near-endless daylight, I'm still tracking GMT time, still using that orange hand to stay connected to the rest of the world.

There are plenty of general adventure watches now, and you could argue the original "Explorer" brief lives in the Explorer I. The Explorer II, especially in 226570 form, sits in a slightly weirder niche, and that's exactly why it's great. It's a steel GMT with a fixed bezel and 24-hour scale that most of the world still doesn't quite know what to do with. And the people who get it, really get it.

Rolex has evolved the line, but there are some choices on the 226570 that clearly honor the original brief. The fixed brushed 24-hour bezel instead of a rotating diver or travel bezel. The prominent 24-hour hand. The high-contrast dial. The focus on toughness and legibility over flash. At the same time, the modern case, bracelet, and calibre 3285 with a 70-hour reserve are unapologetically contemporary, which is what keeps it from being a museum piece.

Line up a 1655, 16570, 216570, and 226570 and the Explorer II "soul" shows up differently in each. The 1655 is the pure cave tool. The 16570 is the understated 40mm all-rounder. The 216570 is the modern size experiment. And the 226570 is, in my view, the point where everything finally balances out.

If I had to defend "fifty years later and the 226570 still nails the brief" to a hardcore 1655 or 16570 fan, here's what I'd say.

To each his own. I do think 40mm is a more universal size and works for more people. I have a 7-inch wrist and the 42mm is on the large side, but it fits and looks great. The 16570 is an incredible watch. So incredible that I still want a white 16570 someday. But the 226570 doesn't replace it. It's the next evolution, not a replacement.

It still does all the same things, and better. The fixed 24-hour bezel is still there. The high-contrast legibility is still there. The orange GMT hand is still there. But now it has 70 hours of power reserve, a more robust movement, better lume, and build quality that can survive everything Rolex claims it can. The soul didn't leave. It got an upgrade.

The 226570 doesn't just mark day and night. It can track a true second time zone, runs a robust modern movement with a long power reserve, and is built to shrug off the kind of abuse Rolex loves to highlight in its marketing. It's more capable in real-world use than the original, not less.

Bigger isn't always better, but in this case the 42mm format, refined case, brighter lume, and upgraded movement let the Explorer II do more of what it was meant to do without losing its identity. I could nitpick small changes, but the truth is I like it the way it is.

From a mall display and a printed black-and-white photo to owning the 50th-anniversary reference on my wrist, the story feels complete. The 226570 is not a break with the past. It's the most faithful modern expression of what the Explorer II has been trying to be since 1971.

That kid at the Berkshire Mall who got laughed at for thinking a Rolex was attainable? He was right to dream about it. And the watch he dreamed about, refined, perfected, still true to its cave-watch roots, is exactly what ended up on his wrist 24 years later.

I'm not done, though. I still want that white 16570 someday. Because now that I understand what the Explorer II really is, I want to experience the lineage firsthand. Not just through research and printed photos, but on my wrist, living with it, understanding how each generation solved the same problem in slightly different ways.

But for now, the 226570 is the peak. It's the reference that makes the whole fifty-year story make sense. And every time I glance at that orange GMT hand, I'm reminded. The brief hasn't changed. Rolex just keeps getting better at nailing it.

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Thanks for reading Part 4. If you're new to the series, here's where it started:

Part 1: The Day Rolex Finally Got It Right Part 2: The Most Underrated Rolex in the Lineup? Part 3: A Complete Buying Guide for the Rolex Explorer II 226570

-Ian