Is your GMT-Master II
the real deal?
The Rolex GMT-Master II is highly sought after for its iconic bi-color bezel and dual time zone capability. With extremely long waitlists driving secondary market premiums, counterfeiters produce sophisticated fakes. Here's how to verify yours.
How to authenticate a GMT-Master II
Bi-Color Ceramic Bezel
Rolex's patented process creates a single-piece ceramic bezel insert with two distinct colors. The color transition line should be sharp and straight, occurring exactly at the 6 and 18 hour markers. On counterfeits, the transition is often blurry, uneven, or occurs at slightly the wrong position. The ceramic should have a rich, deep color with no fading or inconsistency.
24-Hour Hand
The GMT hand (with the triangular arrow tip) makes one full rotation every 24 hours and tracks a second time zone. It should be the correct color for the reference (green on Sprite models, red/orange on Pepsi, blue on Batman). The arrow shape must be precisely formed with sharp, clean edges. Fakes often get the arrow proportions or color shade wrong.
Independent Hour Hand
The GMT-Master II's defining feature is the ability to set the local hour hand independently by pulling the crown to the first position. The hour hand should jump in precise one-hour increments while the GMT hand and minute hand remain stationary. If all hands move together, or if the hour hand doesn't jump crisply, the movement is not a genuine Rolex caliber 3285 (or 3186 on older models).
Jubilee Bracelet Fit
Newer GMT-Master II references (126710 series) are available on the Jubilee bracelet. The five-link design should feel substantial with smooth articulation and no lateral play. The Easylink extension in the clasp provides 5mm of adjustment. Check that the polished center links have a mirror finish and that the transition between polished and brushed surfaces is razor-sharp.
Bezel Color Transition Sharpness
On genuine Rolex bi-color Cerachrom bezels, the line where the two colors meet is perfectly straight and razor-sharp, even under magnification. This is achieved through a proprietary manufacturing process. On counterfeits, the transition often shows bleeding, a slight gradient, or an uneven boundary line. This is one of the hardest details for fakes to replicate.
Rehaut & Crown Engraving
The inner rehaut should display repeating "ROLEX" text with the serial number at 6 o'clock, and the Rolex crown logo at 12 o'clock should align perfectly with the dial's 12 o'clock marker. On the crown itself, the Rolex coronet and the three dots (indicating Twinlock) should be crisply stamped. Counterfeits frequently have misaligned rehaut engraving.
GMT-Master II counterfeit warning signs
Bezel Color Is Wrong Shade
The exact hue of each bezel color is specific to Rolex's ceramic formula. The Pepsi's blue should be a deep, rich royal blue (not navy or light blue), and the red should be a true crimson. The Batman's blue is a brighter, more vivid shade than the Pepsi's. If the colors look off compared to reference photos, the bezel is likely counterfeit.
Bezel Numerals Lack Depth
On genuine Cerachrom bezels, the 24-hour numerals are molded into the ceramic and filled with platinum or gold PVD coating. The numerals should be recessed into the bezel surface, not printed on top. Run a fingernail over the numerals -- on a genuine bezel, you can feel the engraving. Fakes often have painted or pad-printed numerals that sit on the surface.
GMT Hand Doesn't Track Independently
A dead giveaway on cheap fakes: the GMT hand is either non-functional (just a decorative fourth hand) or moves in lockstep with the hour hand. On a genuine GMT-Master II, you can set the local hour hand independently while the GMT hand stays fixed. Test this by pulling the crown to the first click and turning -- only the hour hand should jump.
Incorrect Date Magnification
Like all Rolex date models, the GMT-Master II has a cyclops lens magnifying the date 2.5x. The date should nearly fill the cyclops window and be perfectly centered. Fakes typically have 1.5x magnification or less, and the date may appear small within the lens aperture.
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Frequently asked questions
What is the difference between the Pepsi, Batman, and Coke GMT?
These nicknames refer to the bezel color combinations. The "Pepsi" has a red and blue bezel (ref. 126710BLRO), the "Batman" (also called "Batgirl" on Jubilee) has a black and blue bezel (ref. 126710BLNR), and the "Coke" has a black and red bezel (ref. 126710BKRD, introduced in 2023). There's also the "Root Beer" with brown and black (ref. 126711CHNR) available in Rolesor. Each uses a single-piece Cerachrom ceramic bezel insert with two colors achieved through a patented Rolex process.
What is the difference between the GMT-Master and GMT-Master II?
The original GMT-Master (produced from 1955 to 1999) has a 24-hour hand that is fixed to the regular hour hand -- both move together. The GMT-Master II (introduced in 1983) features an independently adjustable local hour hand, meaning you can set the local time without disturbing the 24-hour GMT hand or the minutes. This makes the GMT-Master II far more practical for frequent travelers. All current production models are GMT-Master II.
Does the GMT-Master II come with a ceramic or aluminum bezel?
All current-production GMT-Master II models use Cerachrom ceramic bezel inserts. Rolex introduced the ceramic bezel on the GMT-Master II in 2005 with the ref. 116718LN (gold) and in 2007 with the ref. 116710LN (steel, black ceramic). The bi-color ceramic inserts (Pepsi, Batman) arrived in 2013-2014. Older references like the 16710 and 16760 use aluminum bezel inserts, which fade over time and can be a desirable vintage trait.