The orange part on a Rolex GMT-Master II is the 24-hour hand. On a fake, that hand is one of the first parts to inspect. Shade, tip shape, and position in the hand stack separate a $120 copy from a $600 copy.
What the orange hand does
The GMT-Master II reads two time zones. The bezel carries 24-hour markings. The orange hand points at the bezel and shows a second time zone against that scale. On ref. 126710 and 126711 the hand is orange lacquer over a white gold frame. It turns once every 24 hours.
Hand stack order
This is the main tell. On genuine calibre 3186 and 3285 the order from the dial up is hour hand, 24-hour hand, minute hand, seconds hand. Many low-cost replicas use an Asian 2836 with a GMT module and put the 24-hour hand at the bottom of the stack. View the watch from the side. If the orange hand sits under the hour hand, the movement is not a clone of a Rolex calibre.
Orange shade and tip shape
Genuine orange sits between red and orange. Replicas run two ways: too yellow and bright, or too red. The tip is a triangle with a flat base and straight edges. Copies show rounded corners, uneven paint at the frame, or a hand that is too wide.
Lume check
The 24-hour hand carries lume inside the triangle. Under UV the glow should match the hour markers in color and brightness. A mismatch points to a repainted or aftermarket hand.
Bezel, dial, and crystal
- Cerachrom insert: numerals are engraved, then filled with platinum or gold. Replicas show shallow cuts, thick fill, or a glossy surface.
- Cyclops: 2.5x magnification on genuine. The date fills the window. Most copies sit near 1.8x to 2x.
- Rehaut: "ROLEX ROLEX ROLEX" plus the serial. Letters align with the minute track. Many fakes drift by half a letter.
- Crystal: laser-etched crown at 6 o'clock, visible under 10x. Copies print a dot instead.
Case and bracelet
Case size is 40 mm on ref. 116710 and 126710. Lug width is 20 mm. End links sit flush with the case, no gap at the top edge. Steel models use 904L steel on genuine bracelets; many replicas use 316L. A full-link steel GMT-Master II bracelet lands near 150 g.
Movement
Genuine calibre 3285 has a 70-hour power reserve and runs at 28,800 vph, or 8 beats per second. Clone movements sold as "3186" or "3285" copy that rate. A 21,600 vph movement (6 beats per second) is a giveaway. Set the watch down for three days. If it stops, the reserve is under 70 hours.
Water resistance
Genuine rating is 100 m. Replicas ship with gaskets that may fail a pressure test. Do not swim with one until a watchmaker tests it.
Price tiers
- Under $150: Asian 2813 or 2836 with a GMT module, wrong hand stack, painted bezel numerals.
- $300 to $500: clone 3186, ceramic insert, correct hand stack on some units.
- $500 to $800: clone 3285, better orange match, 904L option, sapphire with laser-etched crown.
What no replica gets right
Case finishing under a loupe. Genuine lugs have polished flanks with a sharp transition to the brushed top. Copies round that edge. Movement finish and engraving depth inside the caseback also differ. Judge the visible details, not the label.