There’s something quietly addictive about the modern 36mm Explorer I. The Rolex Explorer I 124270 is one of those watches that doesn’t try to impress anyone and ends up impressing everyone anyway. Clean black dial, sharp white markers, perfect proportions. It’s the kind of piece you can wear with a hoodie, a blazer, or a suitcase in an airport lounge, and it never feels out of place.
And because the watch is so “simple,” the strap you choose matters more than you’d think. A good rubber strap can make the 124270 look slightly sportier, slightly more relaxed, or unexpectedly refined, without stealing the Explorer’s whole vibe.
Strap size and fit for the Explorer I 124270 (36mm)
Let’s save you from the one mistake people still make with this model: ordering the wrong width.
The Rolex Explorer I 124270 is 36mm, and it takes a 19mm strap at the lugs. Not 20mm. Not “close enough.” Nineteen.
So when you’re on a Helvetus product page for Explorer I straps, you’ll see a size option. For this reference, you must select 19mm. That single click is the difference between a strap that snaps in cleanly and one that makes you fight your spring bars like it’s a weekend project.
If you want to browse everything that fits this exact watch, the easiest route is the Explorer I rubber strap collection here:
All Rolex Explorer I Rubber Straps
You’ll see the full range of colors, and you can choose straps in both deployant and pin buckle versions depending on how you like your watch to wear day to day.
The straps that suit the Explorer I 124270 best
The Explorer dial is basically a black-and-white poster. That’s why straps either look amazing… or look like they’re trying too hard. These are the colors I keep coming back to on the 124270 because they respect what the Explorer is.
Black is the obvious one, and honestly, it’s obvious for a reason. On the Explorer I, a black rubber strap keeps the watch feeling like the pure tool watch it’s pretending not to be. The dial becomes the star, the case looks a touch sharper, and the whole watch feels more “ready” without looking tactical. It’s the strap I’d throw on if I wanted the Explorer to feel a little more modern while staying totally faithful to its character.
Black Rolex Explorer I Rubber Strap
Navy blue is where the Explorer gets interesting. This isn’t a loud color on the wrist, but it changes the mood. The black dial still reads as black, but the overall watch feels softer and slightly more relaxed, especially in daylight. Navy also plays surprisingly well with denim, grey knits, and anything business-casual. If you wear your Explorer as your “one watch” and you’re bored of black straps, navy is the safe rebellion.
Navy Blue Rolex Explorer I Rubber Strap
Grey is the sleeper pick. It gives the Explorer a clean, contemporary look that makes the white markers and hands pop in a different way. Grey also makes the 36mm case feel a touch more modern, almost like the watch is leaning into its current production sharpness rather than the vintage romance people project onto the Explorer. I like grey when the goal is everyday wear with a bit of quiet style, especially if you rotate outfits a lot and want something neutral that isn’t black.
Grey Rolex Explorer I Rubber Strap
If you’re the type who owns the Explorer because it’s understated, these three colors match that mindset. They let the 124270 stay what it is: clean, capable, and confident without being flashy.
Picking the right Helvetus strap without overthinking it
The nice thing about buying straps made specifically for the Explorer I is you don’t need to gamble on fit. Just remember the practical part: Explorer I 124270 = 19mm, and you need to select 19mm on the product page.
From there it’s mostly lifestyle. If you love the feel of a clasp and want that secure, “watch feels locked in” sensation, go deployant. If you want quick adjustment and a simpler, lighter feel, pin buckle is hard to beat. Either way, the full Explorer I selection (colors plus both buckle styles) is easiest to scan right here:
All Rolex Explorer I Rubber Straps
A clean ending, because the Explorer deserves one
The Explorer I 124270 is one of those watches that rewards small upgrades. A great rubber strap can make it feel fresher, more wearable in heat, and less precious without turning it into something it isn’t. And if you’re going to do it, it’s worth doing properly: a strap designed for this specific Rolex model, backed by a lifetime warranty, shipped free worldwide, with no import costs, and worn by 30,000+ customers worldwide. That’s the kind of boring reliability the Explorer has always been about.
