The short answer
Most copies of the Explorer II 216570 live or die on four details: a true 42 mm case, a fixed 24 hour bezel with clean engraving, an orange 24 hour hand with the right tone, and a movement that sets the hour hand the way the genuine caliber 3187 does. Everything else, dial color, bracelet fit, lume shade, is secondary. If a seller cannot confirm those four items, the watch is a gamble no matter how good the photos look.
Explorer II 216570 Copy Rolex Guide: Picking a 1:1 Build That Holds Up
What reference 216570 is
Rolex introduced the 216570 in 2011 as the replacement for the 40 mm 16570. The case grew to 42 mm, the bezel became a fixed steel 24 hour scale, and the dial moved to the larger maxi layout. Two dials shipped: black and white, with the white one usually called Polar. Inside sat the caliber 3187, a true GMT movement with an independently adjustable hour hand, Paraflex shock absorbers, and a Parachrom hairspring. Water resistance is 100 m and the crystal is sapphire with a 2.5x cyclops over the date at 3 o'clock. Rolex retired the reference in 2021 and replaced it with the 226570.
Case and bezel: the fastest tell
- Measure it. A caliper on the bezel edge should read 42 mm, not 40 and not 43. Plenty of early copies used a 40 mm 16570 case and stretched a dial to fit.
- Check the bezel finish. The genuine bezel is sandblasted steel with engraved numerals filled in black. A polished or glossy bezel is wrong, and so are numerals that look printed.
- Crown guards. They should flow into the case with no hard step and no gap at the base. This is where cheap cases show tooling marks.
- Lug width is 21 mm on the original, not 20. A bracelet that rattles in the lugs usually means the case was not cut to spec.
- Thickness should land near 12.5 mm. A slab that sits much taller will not slide under a cuff the way the real one does.
Dial, hands, and lume
The dial is where photos lie the most. Look for the orange 24 hour hand to be a saturated orange, not a washed pink or a dark amber. The hour, minute, and seconds hands should match the width of the printed markers, and the lume plots should sit inside metal surrounds, so a copy with painted-on markers tends to look flat up close. The Cyclops should magnify the date about 2.5x and stay aligned. A tilted or weak magnifier is common on budget builds. Chromalight glows blue on the real thing, so a green glow is a giveaway under a dark room test.
Movement: the real dividing line
This is the part most buyers skip. The genuine 3187 lets you jump the hour hand forward or back without stopping the seconds, which is how you change time zones. Most copies run an ETA 2836-2 or a Chinese equivalent with a GMT module bolted on. On those, the GMT hand is tied to a different setting sequence and the date quicksets in a different crown position. It works, but the feel is different, and the hand stack order can be reversed. A smaller number of builds use a clone 3187 that behaves closer to the original, and they cost more for that reason. Ask which movement is inside, and ask how the hour hand sets. Vague answers are a red flag.
Bracelet, clasp, and feel
The Oyster bracelet on the 216570 uses solid links, a polished center, and an Easylink extension in the clasp. On a copy, run your thumb along the edges of the links. Sharp burrs and gaps between the center links show up fast. The clasp coronet should be crisp, not a blurred blob, and the flip lock should snap with a firm click. Check that the end links sit flush against the case with no visible step, since that is one of the easiest spots to spot a mismatch on the wrist.
Questions to ask before you buy
- What is the exact case width and lug width in millimeters?
- Which movement is inside, and does the hour hand jump on its own?
- Are the bezel numerals engraved and filled, or printed?
- Is the crystal sapphire with a 2.5x cyclops, and is the date centered?
- Can the seller send a short video of the GMT hand being set, not just still photos?
Bottom line
The 216570 is a hard watch to copy well because so much of its character sits in proportions, not decoration. A 42 mm case, a matte 24 hour bezel, an orange hand with the right tone, and a movement that sets the hour the way Rolex intended will get you most of the way there. Chase the last few percent and the price climbs fast. Decide which of those four things you care about, pay for those, and skip the rest.