How to spot a fake Rolex Explorer II

These five quick checks can identify most fake Explorer II watches within seconds:

The Explorer II dial is a key authentication area, available in white (polar) or black variants with distinct characteristics.

Printing quality and text

The dial text includes "ROLEX," "EXPLORER II," "SUPERLATIVE CHRONOMETER OFFICIALLY CERTIFIED," and the Rolex coronet at 12 o'clock. Under a 10x loupe, every character should be razor-sharp with zero bleeding or inconsistent thickness. The "EXPLORER II" text uses a specific font size and spacing that differs from other Rolex models. On the white (polar) dial, the text is printed in black, while on the black dial, text is in white. Fakes frequently have text that is slightly too thick, too thin, or uses an incorrect font weight.

Hour markers and lume

The Explorer II uses a mix of rectangular and triangular applied hour markers with Chromalight luminous fill (on the 226570). Each marker is set in a white gold surround and should be perfectly aligned with the minute track. The lume fill should be smooth, even, and consistent across all markers. The 12 o'clock inverted triangle and the 3/6/9 Mercedes-style markers all share the same lume color. Under darkness, Chromalight emits a distinctive blue glow that lasts approximately 8 hours. Fakes often have uneven lume application, wrong glow color, or shorter lume duration.

Date window

The date window at 3 o'clock uses a specific Rolex font for the date numbers. On the white dial, the date disc is white with black numerals; on the black dial, the date disc is black with white numerals. The number should be perfectly centered both horizontally and vertically within the window. The Cyclops provides 2.5x magnification with no visible distortion at the edges. Fakes frequently have off-center dates, wrong fonts, or lower Cyclops magnification.

Fixed 24-hour bezel

The Explorer II's defining feature is its fixed 24-hour bezel with engraved markings from 0 to 24. On the 226570, the bezel is made from 904L Oystersteel with deeply engraved numerals filled with luminous material. The even numbers (2, 4, 6, 8, etc.) are marked with full numerals, while odd hours have index markers. The engraving should be deep, clean, and uniform with consistent fill. On fakes, the bezel engravings are often shallow, use incorrect font styles, have uneven luminous fill, or use paint instead of engraved and filled markings.

Sapphire crystal

The Explorer II uses a flat sapphire crystal with Rolex's proprietary anti-reflective coating on the interior. This AR coating produces a subtle blue/purple tint visible at certain angles. The crystal is 42mm on the 226570 and 40mm on the 16570. On fakes, the crystal may lack AR coating (visible as excessive glare), have the AR coating on the exterior (which scratches easily), or use mineral glass instead of sapphire.

Cyclops lens

The Cyclops over the date at 3 o'clock should provide exactly 2.5x magnification. On a genuine Rolex, looking through the Cyclops should fill the entire date window with the number, and the edges of the Cyclops should not distort the view. The Cyclops is bonded to the crystal and should be perfectly centered over the date window. Misaligned Cyclops lenses are a common fake indicator.

Case dimensions

The current Explorer II 226570 has a 42mm case diameter, approximately 50mm lug-to-lug, and 12.5mm thickness. The previous generation 16570 has a 40mm diameter and 12.0mm thickness. Measure with a digital caliper — counterfeits are frequently off by 0.5 to 1mm. The lug width is 21mm on the 226570 and 20mm on the 16570.

904L Oystersteel finishing

The Explorer II case is entirely brushed (satin-finished) on the 226570, with no polished surfaces on the case sides or lugs. This all-brushed aesthetic is a key design element. The brushing should be perfectly straight, parallel, and consistent across all surfaces. The grain direction runs from lug to lug. On fakes, the brushing may be uneven, have mixed grain directions, or include polished areas that are not present on the genuine model. Rolex's 904L steel has a slightly brighter, cooler sheen compared to the 316L used by counterfeiters.

Crown guards and crown

The Explorer II has crown guards with a specific profile that protects the screw-down Triplock crown. The crown guards should be symmetrical, properly brushed, and have clean edges. The gap between the crown and guards should be minimal and uniform. The crown itself features the Rolex coronet and three dots indicating the Triplock system. On fakes, the crown guards are often slightly asymmetrical, and the crown may have a poorly executed coronet or incorrect dot pattern.

Oyster bracelet

The Explorer II 226570 uses a three-link Oyster bracelet with solid center links and solid end links. The 226570's bracelet is slightly wider than the previous generation, matching the larger 42mm case. Each link should feel substantial with zero lateral play. The brushed finishing on all links should be perfectly uniform with parallel grain lines. The bracelet articulates smoothly with no catching. Fake bracelets often have hollow end links, loose tolerances, and inferior brushing quality.

Easylink comfort extension

The 226570 features the Easylink comfort extension system in the clasp, allowing 5mm of additional length without tools. The Easylink mechanism should operate smoothly with a precise, satisfying click. The clasp interior is stamped with the Rolex crown logo and model information. On counterfeits, the Easylink mechanism often feels rough, sticky, or does not provide the correct 5mm extension. The previous 16570 does not have Easylink.

Clasp construction

The Oyster clasp should open and close with a secure, satisfying action. The folding clasp has a safety lock that prevents accidental opening. The interior stampings (Rolex crown, "STEELINOX" or similar) should be clean and precise. The clasp sides should be brushed to match the bracelet. On fakes, the clasp often feels less substantial, the safety lock may be flimsy, and interior stampings may be shallow or incorrectly formatted.

The movement is the ultimate authentication marker, though accessing it requires professional caseback removal.

Caliber specifications

Current and previous Explorer II movements:

• 226570 (current): Caliber 3285, 70-hour power reserve, Chronergy escapement, Parachrom hairspring, 28,800 vph (4Hz), COSC-certified -2/+2 seconds per day
• 16570 (2006-2011): Caliber 3186, 48-hour power reserve, Parachrom hairspring, 28,800 vph, GMT function with independently adjustable hour hand
• 16570 (1989-2006): Caliber 3185, 48-hour power reserve, standard hairspring, 28,800 vph

GMT function test

The Explorer II's GMT function allows the local hour hand to be set independently by pulling the crown to the first position and rotating. The orange 24-hour hand moves in sync with the minute and seconds hands and cannot be independently adjusted. When setting the local hour hand, it should jump in one-hour increments with a precise click at each position. On fakes, the hour hand jumping mechanism often feels rough, imprecise, or moves the GMT hand simultaneously.

Power reserve and accuracy

Wind the 226570 fully and leave it stationary. A genuine caliber 3285 should run for close to 70 hours (nearly 3 days). The 16570 with caliber 3185/3186 should run approximately 48 hours. If the watch stops significantly short of these figures, the movement may not be genuine. Accuracy should be within -2/+2 seconds per day for the 3285 and -4/+6 for the older calibers. A timegrapher test can verify beat rate (28,800 vph), amplitude (275-310 degrees), and beat error.

Rehaut engraving

The Explorer II 226570 has the serial number laser-engraved on the rehaut at 6 o'clock, with "ROLEX" repeated around the full circumference. The engraving should be perfectly aligned with the minute markers, with consistent character size, depth, and spacing. On fakes, the rehaut engraving is often slightly misaligned, with characters that vary in size or depth.

Between-the-lugs engravings

The serial number is engraved between the lugs at 6 o'clock and the model reference (226570 or 16570) between the lugs at 12 o'clock. These are visible only when the bracelet is removed. The engravings should be deep, clean, and use Rolex's specific character font. The serial at 6 should match the rehaut serial exactly. Verify the reference number matches the physical characteristics of the watch.

Verifying the serial

Post-2010 Rolex serial numbers are randomized alphanumeric strings. Contact an authorized Rolex dealer to verify against their database. If the serial appears on multiple watches for sale online, every one is counterfeit. Check the serial against known counterfeit databases and forums.

Explorer II superclones have become increasingly sophisticated. Modern superclones include:

• Cloned 3285 movements with functional GMT hand and 70-hour power reserve claims
• Accurate 42mm case dimensions with correct lug-to-lug measurements
• Engraved fixed bezels with luminous-filled numerals
• Improved orange GMT hand with closer color accuracy
• 904L steel claims on premium-tier superclones
• Easylink-style clasps with extension functionality

When authenticating, always verify that the reference number between the lugs at 12 o'clock matches the specific model characteristics. The 226570 is 42mm with caliber 3285; the 16570 is 40mm with caliber 3185/3186. A reference-size mismatch is a definitive sign of counterfeiting.