Reference:124270
Explorer → 124270
The 124270 is the watch that brought the Explorer back to 36mm. After eleven years of the 39mm 214270 – a watch plenty of collectors liked but which never quite felt like the classic Explorer proportions – Rolex returned to the diameter that defined the line from the 1016 through the 114270. The enthusiast reaction at Watches & Wonders 2021 was immediate and largely positive. This was the Explorer people had been asking for.
Core facts
| detail | value |
|---|---|
| reference | 124270 |
| family | Explorer I |
| status | current production |
| introduced | 2021 (Watches & Wonders) |
| case | 36mm Oystersteel (904L) |
| movement | caliber 3230 |
| bezel | thin polished Oystersteel |
| dial | black lacquer, glossy finish |
| crystal | sapphire with AR coating (both sides) |
| water resistance | 100m |
| crown | Twinlock screw-down |
| bracelet | Oyster with Oysterlock clasp, Easylink 5mm extension |
| lug width | 20mm |
| predecessor | 214270 (39mm, 2010-2021) |
| variant | 124273 (Rolesor – steel/18k yellow gold) |
Where it sits in the line
The Explorer I is the simplest sports Rolex – time only, no bezel complication, no date. The 124270 is the 36mm option in the current two-size Explorer lineup (alongside the 40mm 224270 introduced in 2023). It sits in the direct lineage of the 1016, 14270, 114270, and 214270.
Hodinkee described the 124270 as “remarkably similar in appearance to the erstwhile 14270 and 114270.” That is the point. The 39mm 214270 was a departure; the 124270 is a homecoming.
Production outline
A current-production reference introduced at Watches & Wonders 2021. The 124270 shares its case architecture with the 2020 Oyster Perpetual 36mm, which tells you something about how Rolex approaches platform sharing across the sport range.
The context that matters is not production complexity – there is essentially one configuration in steel – but what the return to 36mm meant for the Explorer’s identity. The 39mm experiment ran for a full decade. Going back was a deliberate choice, and one that landed well with collectors who had been wearing 14270s and 114270s all along.
Movement notes
Caliber 3230 sits inside – the same no-date movement found in the Submariner 124060. The headline number is the 70-hour power reserve, up from 48 hours in the outgoing 214270’s caliber 3132. That is a weekend-off-the-wrist reserve with room to spare.
The technical details: 31 jewels, 28,800 vph, Chronergy escapement with a nickel-phosphorus pallet fork and escape wheel (paramagnetic, so no worries about magnetic fields in daily life). The escape wheel is skeletonized for efficiency. The balance spring is Rolex’s blue Parachrom hairspring, also paramagnetic and reportedly ten times more shock-resistant than a conventional spring.
After COSC certification, Rolex applies their own Superlative Chronometer standard: -2/+2 seconds per day, which is twice as tight as the standard COSC tolerance of -4/+6 seconds per day.
Dial map
One dial, one story. Black lacquer with a glossy finish that catches light differently than the matte dials of some predecessors. The 3-6-9 numerals and hour markers are applied 18k white gold filled with Chromalight luminescence (blue glow, long-lasting). The Mercedes-style hour, minute, and seconds hands are also 18k white gold with Chromalight.
A small detail worth noting: there is a crown symbol between “Swiss” and “Made” below 6 o’clock. This is a modern Rolex tell – it appears on current-production models equipped with the latest generation of movements.
Case, bezel, crystal, and crown
The 36mm Oystersteel case has a thin polished bezel and tapered lugs. The proportions are deliberately close to the five-digit Explorers, and on the wrist the resemblance is clear. The case is not an exact copy of the old 36mm cases – it shares its platform with the 2020 Oyster Perpetual 36mm – but the visual intention is unmistakable.
The sapphire crystal has anti-reflective coating on both sides, which is a meaningful practical improvement over the single-side coating of older references. Readability in bright light is noticeably better.
The Twinlock screw-down crown provides 100 metres of water resistance. Not a dive watch, not trying to be – but more than enough for any realistic daily-wear scenario.
The caseback is solid Oystersteel, screw-in. No display back, as is standard for Rolex.
Bracelets, end links, and clasps
The Oyster bracelet uses the Oysterlock safety clasp with an Easylink 5mm comfort extension. No Glidelock here – that is reserved for the dive models. The Easylink is a simpler mechanism: a single fold-out link inside the clasp that adds 5mm when you need it. Practical in warm weather.
The lug width is 20mm, consistent with the Explorer’s traditional bracelet proportions.
Special branches: the 124273 Rolesor
The real surprise at Watches & Wonders 2021 was not the return to 36mm – collectors had been expecting that. It was the 124273.
A two-tone Explorer. Steel and 18k yellow gold. Yellow gold bezel, crown, center bracelet links, hands, and applied markers. The Explorer had been exclusively stainless steel for its entire 68-year history. Hodinkee called it an “unexpected curveball,” and that understates the reaction. For a watch whose identity was built on tool-watch austerity, gold was either heresy or long-overdue acknowledgment that the Explorer is a luxury product worn in boardrooms, not on Himalayan expeditions.
The 124273 shares every specification with the steel 124270 – same 36mm case, same cal. 3230, same 70-hour reserve. The difference is materials and price: EUR 10,300 for the Rolesor versus EUR 6,100 for the steel.
Whether the two-tone Explorer has staying power or becomes a footnote depends on whether Rolex extends the concept (a 224273 in 40mm? Rose gold?) or treats it as a one-off experiment.
Sources
- Rolex Explorer Collection Page — Rolex SA, Rolex
- The History of the Rolex Explorer, The All-Rounder Watch — Frank Geelen, Monochrome Watches
- A Comprehensive Collector's Guide To The Rolex Explorer I — Jon Bues, Hodinkee
- Hands-On - 2021 Rolex Explorer 1 36mm 124270 and Rolesor 124273 — Monochrome Watches team, Monochrome Watches