Quick answer
IW329146 is an IWC reference in the Aquatimer Automatic 42 family. A "replica IW329146" is a copy of a steel dive watch that IWC sells in the thousands of dollars. Replica sellers list these copies from $60 to $550. No copy uses the IWC caliber 32111. Any listing that claims a "clone 32111" movement identical to the original is false. The exact dial and strap combination for IW329146 is something I cannot confirm. Check iwc.com or an authorized dealer for that.
What the reference number tells you
IWC reference numbers start with IW and a six-digit block. The first four digits name the family. The last two name the variant. IW3291 covers the Aquatimer Automatic 42. The -46 suffix points to one dial, case, and strap combination inside that family.
Specs to verify in any listing
- Case: 42 mm, stainless steel.
- Movement: IWC caliber 32111, automatic, 120-hour power reserve.
- Water resistance: 300 m on the genuine watch.
- Bezel: rotating dive bezel with the SafeDive system. The outer bezel drives the inner ring.
- Strap: IWC EasX-CHANGE quick-release system.
If a listing shows different numbers, the seller is describing a different watch.
Movements inside replicas
Replica Aquatimers use third-party automatic movements. The common ones are the Seiko NH35, the Miyota 9015, and Chinese copies of the ETA 2824. The NH35 runs at 21,600 vibrations per hour with about 41 hours of reserve. The Miyota 9015 and the 2824 copies run at 28,800 vibrations per hour with 38 to 42 hours of reserve. None of them reaches 120 hours. A power reserve test tells you which movement you got.
Price tiers
- $60 to $120: quartz or basic automatic, mineral glass, plated case. The bezel is decorative and does not move.
- $200 to $400: automatic, sapphire crystal, 316L steel. The bezel may turn but does not drive an inner ring.
- $450 and up: sapphire with anti-reflective coating, better dial printing, closer case finishing.
Price does not equal water resistance. Most replicas ship with gaskets that were never pressure tested.
Water resistance
The genuine watch is rated to 300 m. Replicas in the mid and top tiers often hold 30 m to 50 m in a static test. Crown gaskets, caseback gaskets, and crystal seals are the failure points. Do not dive or swim with a replica. A watchmaker can pressure test a case for a fee.
Checklist before you pay
- Ask for photos of the actual watch, not catalog renders. Request a shot of the caseback and the crown.
- Request a timestamp photo next to the watch.
- Ask which movement is inside and ask for a timegrapher reading.
- Confirm the return window in writing. Seven days or more is standard for sellers with a history.
- Use a payment method with chargeback rights. Avoid wire transfer and crypto.
- Ask for a pressure test result if you plan to wear it near water.
Legal and customs facts
Counterfeit watches carry trademarks owned by IWC and its parent company, Richemont. US Customs and Border Protection can seize counterfeit goods at the border. CBP states that the personal-use exemption does not cover counterfeit trademarked items. One seized parcel can also lead to a penalty claim. Buying a replica carries trademark risk in the US. Reselling one is a separate offense.
Where the listings appear
Replica Aquatimers show up on dedicated replica sites, forum classifieds, and general marketplaces. Dedicated sites post the same stock photos across many references. Forum sellers post dated photos and often have a sales history. Marketplace listings sit in the middle. None of these sources verifies the watch, the movement, or the water resistance.