What the Number IW938604 Actually Is
I have never matched IW938604 to a catalog entry. It lives in listing titles, not in spec sheets. Sellers use strings like this as internal tags, and what shows up depends on which factory batch they pulled that week. The useful question is not whether IW938604 is good, it is which build of this case you want on your wrist.
The photo sets tagged with it land in the same place: a 40 to 42mm automatic, date at 3, applied indices, display back, bracelet with a push-button clasp. Treat that as the target look and judge sellers by how close they get to it.
My Pick First: The Super-Clone Tier, $280 to $400
If you want one answer, take this one. Look for a Miyota 9015 or an A2824 inside, a 904L case, sapphire front and back with inner AR coating, and roughly 140g on the bracelet. The units I have handled held within 5 to 8 seconds a day on a timegrapher.
Why it wins: the case is milled from a scanned original instead of drawn from photos, the dial printing goes down in one pass, and the end links sit flush against the lugs. Those three things are what people notice at arm's length. Every tier below this one gives up at least one of them.
The Other Options
Mid tier, $150 to $240
Seagull ST2130 or an A2824, 316L case, sapphire up front and either mineral or a solid back. Dial printing runs slightly thick and the date font is the usual tell. Solid daily wear. Do not expect the bracelet to feel like the original.
Budget tier, $70 to $130
DG2813 or 8215 inside, hollow end links, push-pull crown with a 5ATM sticker on the back. Stickers mean nothing. The winding is gritty, the rotor rattles when you flick your wrist, and the crystal is flat mineral with a hard reflection. Fine as a beater or a gift for someone who will not look closely.
The chronograph variant
If the look you actually want is the chrono dial, skip the $200 quartz versions with painted subdials. Either pay for a running 7750-based build or stay with the three-hand version. Dead subdials read as fake from across a table.
Where Cheap Builds Give Themselves Away
- Date window with a stepped, unfinished edge.
- Lume that quits after ten minutes instead of holding for hours.
- Bracelet screws that strip the first time you size it.
- Caseback engraving that is shallow and off center.
- A crown that threads rough or clicks instead of gliding.
Before You Pay
- Ask for QC photos of the actual unit: front, back, crown side.
- Ask for a timegrapher image with rate, amplitude, and beat error showing.
- Confirm the movement by name, not by "Swiss movement" in the title.
- Check that water resistance is described as tested, not as a number printed on a caseback.
- Read the return window. Under seven days is not a return window.
Bottom Line
The tag on the listing matters far less than the movement, the case steel, and the dial printing. Buy the top tier once if you wear it often, drop to mid tier for a rotation piece, and go budget only when you accept the trade.
One more thing worth knowing before you order: selling counterfeit goods is illegal in the US, and parcels do get seized. No QC photo removes that risk, so factor it in.