Is your Explorer II
the real deal?
The Rolex Explorer II is a 42mm GMT watch with a fixed 24-hour bezel and signature orange GMT hand. Originally designed for cave explorers and polar expeditions, its distinctive look and Rolex pedigree have made it very popular and heavily counterfeited. Here's how to verify yours.
How to authenticate an Explorer II
Fixed 24-Hour Bezel
The Explorer II's steel bezel is engraved with 24-hour markings and is completely fixed. It should not rotate in either direction. The engraved numbers and hour markers should be filled with black lacquer that sits cleanly in the grooves. On counterfeits, the bezel may rotate (a major red flag), the numerals may use the wrong font, or the black fill may be uneven or extend outside the engraved channels.
Orange GMT Hand
The Explorer II's signature orange GMT hand has a distinctive arrow-shaped tip that points to the 24-hour bezel scale. On genuine examples, the orange color is a specific Rolex shade: a bright, saturated orange that is consistent across the entire hand with no color variation. The arrow tip is precisely formed with sharp edges. Counterfeits often use the wrong shade of orange, have a blurry arrow tip, or show uneven paint application.
Chromalight Lume Plots
The Explorer II uses Chromalight luminescent material on the hour markers, hands, and the triangle at 12 o'clock. Chromalight emits a blue glow in the dark and lasts up to 8 hours. The lume plots should be evenly applied with no overflow beyond the marker borders. In the dark, the glow should be uniform and distinctly blue. Counterfeits often use green-glowing Super-LumiNova instead, or have unevenly applied lume that fades quickly.
Rehaut Engraving
The rehaut (inner bezel ring) is laser-engraved with repeating "ROLEX" text, and the serial number sits at 6 o'clock. On genuine Explorer IIs, each letter aligns precisely with the minute markers around the dial. The Rolex crown logo appears at 12 o'clock on the rehaut. Misalignment, uneven engraving depth, or blurry characters are strong indicators of a counterfeit.
Cyclops Lens Magnification
The Explorer II has a Cyclops lens over the date window at 3 o'clock that magnifies the date 2.5x, filling the entire date aperture. On genuine Rolex watches, the date is crisp and easily readable through the lens. On counterfeits, the magnification is often only 1.5x, leaving the date looking small within the window. The Cyclops should also be perfectly centered over the date aperture.
Case Proportions & Crown Guards
The Explorer II's 42mm case has specific proportions: relatively short lugs for its diameter, a polished bezel contrasting with a brushed case, and crown guards that blend smoothly into the mid-case. The overall thickness is 12.5mm. Counterfeits often get the lug-to-lug length wrong, have overly thick or thin cases, or feature crown guards that are too angular or poorly integrated with the case body.
Explorer II counterfeit warning signs
Rotating Bezel
The Explorer II's 24-hour bezel is permanently fixed and must not rotate. If the bezel can be turned in either direction, the watch is definitively counterfeit. This is one of the easiest and most reliable checks for the Explorer II.
Wrong Orange on GMT Hand
The orange GMT hand uses a specific Rolex shade that is bright and saturated but not neon. Many counterfeits use a red-orange, a dull orange, or even a fluorescent orange that is immediately distinguishable from the genuine color. Compare directly against official Rolex photography if in doubt.
Incorrect Dial Text Layout
The Explorer II dial text includes "EXPLORER II" and "SUPERLATIVE CHRONOMETER OFFICIALLY CERTIFIED" in specific fonts and positions. On counterfeits, the text is often too large, too small, uses the wrong typeface, or is positioned at the wrong height on the dial. The "II" should use Roman numerals with precise serif detailing.
Green Lume Instead of Blue
Modern Explorer IIs use Chromalight, which glows blue in the dark. Many counterfeits use cheaper Super-LumiNova that glows green. If the lume on the dial and hands glows green rather than blue, the watch is either counterfeit or has had its dial and hands replaced with non-genuine components.
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Frequently asked questions
What is the difference between the Rolex Explorer and Explorer II?
The Rolex Explorer (ref. 124270) is a 36mm time-only watch with a simple three-hand layout, designed as a no-frills field watch inspired by the 1953 Everest expedition. The Explorer II (ref. 226570) is a 42mm GMT watch with a fixed 24-hour bezel, an additional orange GMT hand for tracking a second time zone, and a date window at 3 o'clock. The Explorer II was originally designed for speleologists and polar explorers who needed to distinguish day from night. They are fundamentally different watches despite sharing the Explorer name.
Why does the Rolex Explorer II have a fixed bezel?
Unlike the GMT-Master II's rotating bezel, the Explorer II's 24-hour bezel is fixed and engraved with hour markers from 1 to 24. It works in conjunction with the orange GMT hand to indicate a second time zone or, in its original purpose, to distinguish AM from PM in environments where daylight is not visible (such as caves or polar regions during midnight sun). The fixed bezel is a key authentication point because it should not rotate at all. If the bezel moves, the watch is counterfeit or has been tampered with.
What movement is in the current Rolex Explorer II?
The current Rolex Explorer II (ref. 226570, introduced in 2021) uses the caliber 3285, the same movement found in the GMT-Master II. It features a 70-hour power reserve, the Chronergy escapement for improved efficiency, and a Parachrom hairspring for resistance to shocks and magnetic fields. The independently adjustable local hour hand allows the wearer to set the local time in one-hour jumps without stopping the watch or disturbing the GMT hand.