The replica IW938720 is a 1:1 copy of an IWC-style automatic watch, built with a stainless steel case, a sapphire or mineral crystal, and a Swiss or Japanese movement inside. You judge a copy of this type on four things: case profile, dial printing, movement quality, and finish. The code itself is a seller reference, not an official IWC family, so confirm which model the watch mirrors before you pay.
What does the code IW938720 tell you?
IWC reference numbers use an IW prefix plus six digits, and the first digits map to families such as Pilot, Portugieser, Portofino, and Aquatimer. IW938720 does not match those common families, which is why most listings treat it as an internal stock number. Ask the seller for the case size, dial layout, and movement so you know what you are buying.
A seller who cannot answer those three questions is reselling stock they have never handled. Move on.
Which specs should you confirm before you pay?
Case and crystal
Request the diameter, lug-to-lug distance, and thickness in millimeters. A 41 mm copy that is 15 mm thick wears nothing like the original it copies. Sapphire with anti-reflective coating on both sides is the top-tier standard. Mineral glass is the budget option and scratches within months.
Movement
High-grade copies run a Swiss Sellita SW200, an ETA 2824 clone, or a Japanese Miyota 9015 or Seiko NH35. The listing should name the caliber, the jewel count, and the power reserve. "Imported automatic movement" with no model number is a warning sign.
Dial, hands, and print
Look at the font weight of the numerals, the cut of the date window, and the marker edges. Applied indices, level hands, and sharp print separate a good replica IW938720 from a rough one. A loupe photo or a close-up video shows more than any product description.
Bracelet or strap
Check the fit of the end links against the case and the finish on the clasp. Solid links, screw pins, and engraved logos point to a better build. Hollow links and loose spring bars show up on cheap copies.
How do you spot a low-grade copy?
- Mineral glass sold as sapphire, or sapphire with no coating.
- A quartz movement described as automatic. Watch the seconds hand: a tick means quartz, a sweep means mechanical.
- Printed indices instead of applied metal markers.
- Shallow or off-center caseback engraving.
- Stock photos that appear on several seller pages.
- A price well under the market for the same reference.
Does a replica IW938720 keep time?
A Swiss clone or a Miyota 9015 holds within about -10 to +20 seconds a day, which is normal for this class of watch. That is the same window as many entry-level Swiss automatics. Service intervals run three to five years, and a watchmaker can regulate the rate for a small fee.
What about water resistance?
Most listings rate these watches between 3 ATM and 10 ATM. That covers rain, hand washing, and splashes, but not swimming or diving. If the crown screws down and the caseback gasket is intact, a watchmaker can pressure test the watch and confirm the seal before you expose it to water.
What does a 1:1 replica IW938720 cost?
Listings cluster in three bands. Entry copies run from about $80 to $150 with mineral glass and a basic movement. Mid-tier builds sit between $180 and $350 and add sapphire, a cleaner dial, and a Swiss or Japanese automatic. Top-tier 1:1 copies climb past $400 and put the money into case geometry, hand finishing, and movement decoration.
Price alone proves nothing. A $450 listing with blurry photos and no movement details is worse than a $250 listing with a video and a return window.
What should you check when the watch arrives?
- Set the time and watch the seconds hand for a smooth sweep.
- Check the date change at midnight and the crown action in all positions.
- Time it against a reference clock for 24 hours to find the daily rate.
- Look at the crystal at an angle for coating glare and scratches.
- Wipe the case with a soft cloth and test the clasp or buckle.
How should you care for it?
Keep the watch away from magnets, steam, and hard knocks. Have the gaskets checked every two to three years, and take it in for a service when the rate drifts. A well-kept top-tier copy can run for a decade on one service.
Store it in a dry box or a watch roll. A winder makes sense only if you wear the watch several times a week.
FAQ
Is the replica IW938720 a real IWC model?
No current IWC family matches that number. Treat it as a seller code and ask which model the watch copies.
Which movement should I choose?
A Sellita SW200 gives the closest feel to a Swiss original. Miyota and Seiko automatics cost less, run well, and are cheap to replace.
Can I swim with it?
Only after a pressure test. A 5 ATM label from a seller is a claim, not a certificate.
How do I vet the seller?
Ask for dated photos of the watch you will receive, a video of the seconds hand, and a written return window. Sellers who refuse all three are not worth the risk.