Short answer
A replica IW329062 is worth buying only if it copies the two features that define this watch: a 42 mm steel diver case rated to 300 m, and an internal rotating bezel driven by the crown at 4 o'clock. Copies that nail the dial but use a weak, drifting or fixed inner bezel fail at the exact point this reference is known for. Judge the case first, the bezel mechanism second, the dial third, and the movement last.
What the genuine IW329062 is
The reference belongs to the IWC Aquatimer Automatic 42 family. Baseline specs to memorize before you handle any copy:
- Stainless steel case, 42 mm across, about 14 to 15 mm thick
- Internal rotating dive bezel operated through the crown at 4 o'clock
- 300 m water resistance, marked 30 bar
- Domed sapphire crystal with anti-reflective coating
- Solid caseback with engraved reference number and depth rating
- Swiss automatic movement with a 42 hour power reserve in the original
- Rubber strap or steel bracelet with a folding clasp
If a seller cannot state the case size and the bezel type in one message, end the conversation there.
Before you start
- A digital caliper
- A 10x loupe
- A bright LED or UV light for lume checks
- Published factory specs for the reference
- A pressure tester, or a watchmaker nearby who owns one
How to check a replica IW329062
- Measure the case across the widest point and from caseback to crystal, then compare both numbers to the published specs.
- Turn the crown at 4 o'clock and confirm the inner bezel moves with it, with a firm click at every minute mark.
- Shake the watch gently and check that the inner bezel does not drift off its set position.
- Study the dial under the loupe, looking for sharp index edges, flat printing and a date that sits square in its window.
- Tilt the crystal under a light and confirm the anti-reflective coating is even rather than patchy or purple.
- Charge the lume for 30 seconds, then check that hands and markers glow to the same brightness and fade at the same speed.
- Unscrew the crown and count the turns, since fewer than three full turns signals a shallow, weak tube.
- Inspect the caseback engraving for depth and font weight, and confirm the reference and depth rating match the model.
- Check the strap or bracelet fit at the lugs, because gaps and rattle point to a case that was not cut to spec.
- Ask for a movement photo or open the case, then identify the calibre: an ETA 2824 clone, a Seagull ST2130, or a Sellita SW200.
- Run the watch on a timegrapher in two positions and record rate, beat error and amplitude before you decide.
- Pressure test to the rated depth before any contact with water, regardless of what the listing promises.
Movement tiers
Most copies under 300 USD run an unbranded 2824 clone with a stamped rotor and light engraving. Mid tier builds around 300 to 600 USD usually step up to a Seagull ST2130 or an ETA 2824, which winds more smoothly and holds a steadier rate. Top tier builds use a Sellita SW200 or a decorated Swiss base with a better date change and cleaner finishing on the bridges. None of them replicate the original calibre architecture, so treat the movement as a reliability question, not an authenticity question.
Red flags
- The 4 o'clock crown winds the movement but does not move the inner bezel
- Bezel markings that do not line up with the dial at the zero position
- Lume that glows green on the hands and blue on the markers
- Caseback text with the wrong depth rating or a reference number that does not match
- Crystal with no visible coating, or a coating that scratches off with a fingernail
- A seller who refuses a pressure test or a movement photo
Care after purchase
Rinse the case in fresh water after saltwater use, dry it with a soft cloth, and check the crown seal once a year. Have the gaskets replaced every two years if you actually dive with it. Keep the inner bezel exercised by turning the crown through its full range once a month, because that mechanism is the first thing to stiffen on a copy. Store the watch away from magnets, since a magnetized 2824 clone will run fast by tens of seconds a day.