The IW323704 is the stainless steel, black dial version of IWC's Aquatimer Automatic, a dive watch with an internal rotating bezel and around 42mm of case. A good replica IW323704 gets the case profile, bezel action, dial printing, and movement base right; a bad one gets the proportions wrong and hides it behind studio lighting. Judge the replica the way you would judge the real watch: on the wrist, in daylight, with the bezel turned.
What the IW323704 Actually Is
The reference sits in the Aquatimer family, IWC's dive line. It uses a crown-operated internal dive bezel rather than an external ratcheting ring, which is the detail most replicas struggle with. The bezel track sits under the crystal, driven by a second crown at 2 or 4 o'clock depending on the generation, and the dial carries applied indices with lume plots and a date window at 3 o'clock. Caseback, crown guards, and the shape of the lugs are all part of the silhouette.
Because that bezel system is unusual, it doubles as the fastest tell. On a well-made replica the inner ring aligns with the markers and turns with a firm, indexed feel. On a cheap one it drifts, sits off-center, or feels gritty.
What Separates a Solid Replica From a Poor One
Case and bezel
Look at the case flanks: the genuine has a defined profile with brushed surfaces and polished chamfers in specific places. Replicas often over-polish, rounding edges that should stay sharp. Check the inner bezel ring alignment at 12, the tension when you rotate it, and whether the crown screws down smoothly.
- Lug width and thickness should match the reference, not a generic 42mm case
- Inner bezel triangle should land exactly on 12 when reset
- Crown threads should engage without wobble or cross-threading
- Caseback engraving should be crisp, not lasered shallow
Dial, hands and crystal
Print quality is where mid-tier replicas close the gap and cheap ones fall apart. The text should be sharp, evenly spaced, and the right weight. Applied indices should sit flat with clean lume fill and no overflow. Hands should have uniform finishing with no burrs at the tips. Sapphire with a proper anti-reflective coating matters more than most buyers expect, since a milky or overly blue coating ruins the look in daylight.
Movement
The genuine is a slim automatic with central seconds and a date. Replicas mirror that layout with three common bases, and the base you get drives the case thickness, the sweep of the seconds hand, and how easy servicing will be later.
- Entry tier: a basic Asian automatic, usually thicker and louder, with a choppy sweep
- Mid tier: a 2824-style clone, decent sweep, widely serviceable, good value
- Top tier: a Miyota 9015 or a Swiss-base movement, slim enough to keep case thickness honest
Strap and end links
If the replica comes on a steel bracelet, check for solid end links that sit flush against the case with no light gaps, a clasp that snaps shut, and screws rather than push pins. Rubber straps should feel dense and flexible, not slick and plasticky.
The QC Checklist to Run Before You Pay
- Ask for dated photos and a short video showing the bezel turning and the seconds hand sweeping.
- Confirm case diameter and thickness with calipers in the photo, not just the listing text.
- Check dial text under direct light, not a softbox.
- Verify the date flips cleanly at midnight and sits centered in the window.
- Confirm the crown screws down fully and the stem has no play.
- Look at the caseback threads and gasket seat for cleanliness.
- Ask which movement is inside and whether parts are available.
- Confirm the return window and what condition voids it.
Water Resistance: Treat the Claim as a Claim
Dive-watch styling does not equal dive-watch sealing. The ISO 6425 standard sets real requirements for diving watches, including pressure testing and legibility criteria, and a replica is not certified to it. Many replicas ship with dry gaskets and untested cases. If you plan to swim, have a watchmaker pressure test the case first, or simply keep it dry. That single decision prevents most of the water damage complaints owners report.
Price Tiers and What to Expect
Cost tracks three things: movement, case finishing, and how faithfully the bezel system is copied. Budget replicas look acceptable in photos and disappointing in hand. Mid-tier pieces are the sweet spot for most buyers, with a serviceable movement and honest case finishing. Top-tier builds cost more but hold up to side-by-side comparison and are easier to keep running long term.
Living With It
- Have the case opened and the gaskets greased once a year if you wear it often
- Keep the watch away from magnets, since automatic movements are sensitive to them
- Wipe the case with a soft cloth after wear to protect the brushed finish
- Store it on a soft surface rather than loose in a drawer
Bottom Line
The replica IW323704 is a good pick if you want the Aquatimer look with an internal bezel that actually works, and a poor pick if you expect genuine dive-watch sealing. Spend your budget on case proportions and the movement, ask for real photos and video, and skip any seller who will not show the bezel turning.