Buy a fake IW329111 on proof, not on pictures. Before money changes hands, get four things confirmed in writing: the movement inside, the exact case diameter, the crystal material and the stated water resistance. A first copy of an IWC dive watch stands or falls on those points, plus the feel of the bezel and the printing on the dial. The box, the tags and the wrapping are packaging, not quality.
What to check before you order
Movement
Ask for the calibre name and the beat rate. A serious clone of the automatic used in this reference runs at 28,800 vibrations per hour, which is 4 Hz, and the seconds hand should sweep in small steps rather than jump. Ask whether the rotor winds in both directions and whether the date snaps over at midnight or drifts through the window. Sellers who build to a price will dodge these questions, and that dodge is your answer.
Case and bezel
This reference sits in the Aquatimer family, so expect a 42 mm class steel case with a dive scale that rotates inside the crystal. On this IWC system the outer bezel drives the inner ring, which means the two should move as one unit and click at each minute. Check that alignment lands on 12, that the bezel has no side to side play, and that the crown threads in without grit. A case that is 1 mm too thick throws off the whole silhouette, so measure rather than trust.
Crystal, dial and hands
Sapphire with an antireflective coating on the inside face. Look at the date font, the shape of the applied indices, the lume color under a lamp, and how the hands sit against the dial. Crooked markers and a milky date wheel are the two faults that show up first in photos.
Strap and clasp
Most builds ship on rubber with quick release spring bars. Check the lug fit in the photos, because a gap between strap and case is visible from a meter away.
Parameter bands to compare
- Case size: 42 mm class diameter, 14 mm class thickness
- Lug width: 22 mm class
- Movement: automatic, 4 Hz, 40 to 45 hours of power reserve
- Crystal: sapphire, flat with a slight dome, inner antireflective coating
- Water resistance: the genuine rating is 300 m, and a first copy should not be trusted past splashes unless the case has been pressure tested
- Weight: roughly 90 to 120 g on a rubber strap
Pitfalls that cost money
- Listings made of adjectives and no numbers.
- Photos taken from the brand's own press set.
- A water resistance claim with no pressure test behind it.
- A movement name that changes between messages.
- A bezel that feels gritty or stops short of 12.
- Paying a premium on the belief that a higher price must mean a higher grade.
- Ignoring the legal side. Counterfeit watches can be seized at the border and selling them creates trademark exposure.
FAQ
Can I tell the movement grade from photos?
Partially. Ask for a short video with the watch running and the date changing. The sweep of the seconds hand and the snap of the date tell you more than a still frame of the rotor.
Should I pay extra for a box and papers?
No. On a first copy they add bulk to the shipment and nothing to the watch. Spend that budget on the movement and the case finish.
Will a local watchmaker service it?
Some will, many will not touch an unbranded clone. Ask before you commit, and ask what a basic clean and regulate would cost.
How long should the watch run off the wrist?
A healthy automatic in this class holds 40 to 45 hours. If a seller quotes 20 hours, the movement is a lower grade than the listing suggests.
Is owning one risky?
The legal risk sits mostly with import and resale. Counterfeit goods can be stopped at customs, and selling them can lead to trademark claims. Check the rules where you live before you order.