Short answer
A replica IWC IW329016 is a copy of the Aquatimer Automatic, and quality varies more than the price suggests. Buy only after you confirm the case dimensions against IWC's published data for that reference, test the bezel and crown yourself, and assume the watch is not safe for diving until a watchmaker pressure-tests it. Treat it as a lookalike, not as a dive instrument.
Get the real specification first
Sellers often reuse one spec sheet for every Aquatimer variant. Look up IW329016 on IWC's site and write down the numbers before you compare photos. Every question you send should be measured against that list.
- Case diameter and thickness in millimeters
- Lug width and the strap or bracelet type shown on the reference
- Crystal material and coating
- Bezel type and how it is operated
- Dial layout, date position, and index shape
- Stated water resistance
Inspection steps
- Ask for new photos with a handwritten date card next to the watch, not stock images.
- Measure the case and lug width with calipers and compare both to the official figures.
- Turn the bezel through a full rotation and check for play, scraping, or a misaligned marker at twelve.
- Wind and set the crown, then confirm it screws down or pushes in with a firm, clean action.
- Change the date through a full cycle and look for a slow, crooked, or half-finished jump.
- Check the dial under angled light for dust, uneven lume, and printed text that sits off center.
- Time the movement over 24 hours and note the daily rate, then ask which movement family the seller used.
- Read the caseback engraving with a loupe and confirm it shows the correct reference text.
- Open and close the clasp several times and check the spring bars sit in the lug holes without rattle.
Red flags
- Photos that show a genuine watch but not the piece you will receive
- No return window or no policy in writing
- A price far below the normal range for this reference
- Claims of Swiss origin with no movement photo or model number
- A seller who refuses a short video of the running watch
Water resistance and care
Replica cases rarely match the seals and gasket quality of the original. Keep the watch away from showers, pools, and salt water, and have a watchmaker run a pressure test before you trust it near any moisture. Rinse and dry the case after contact with sweat, and store it away from magnets and direct sun.
What a replica will not give you
No warranty from IWC, no service history, and no guaranteed resale value. Budget for a service or strap replacement soon after delivery, and buy from a seller with a written return policy. Customs in the US can seize counterfeit goods, so confirm the shipping terms before you pay.