Our top pick for a fake IW545170 is the hand-wound build that copies the IWC Portofino Hand-Wound Eight Days dial layout and runs a decorated manual-wind movement with a working power reserve display. It wins on the details that show at arm's length: a 45 mm case with the right lug profile, a clean lacquer-style dial with crisp printing, and a movement you wind by hand rather than a quartz module hidden under a display back. Every option below was judged on dial fidelity, movement type, case and crystal finishing, strap quality, and how easily a buyer can check a seller before paying.
What the IW545170 reference actually is
IW545170 belongs to the IWC Portofino Hand-Wound Eight Days family, a dress watch built around a 45 mm case and the hand-wound calibre 59210 with an eight-day power reserve, which works out to 192 hours on a full wind. The dial carries a small seconds register and a power reserve display, and the caseback is sapphire so the movement is visible. That last point matters for replicas: any version that hides the back or fills it with a printed plate is a step down, because the whole appeal of this reference is the hand-wound movement on show.
Because the original is large and fairly thin for its diameter, replicas tend to fail in two places: overall thickness and the shape of the lugs. A bulky case reads as wrong on the wrist even when the dial photo looks convincing.
Top pick: decorated hand-wound build with a working power reserve
This is the version worth chasing. It mirrors the Portofino case shape, keeps the dial layout close to the original, and uses a manual-wind movement with applied decoration, blued screws and a rotor-free layout that suits a display back. The power reserve indicator should actually move as you wind, even if the reserve is shorter than the genuine eight days.
Pros
- Correct hand-wound feel: you wind it, set it, and the sub-dial responds
- Dial printing, applied markers and hand shape are the closest match in the replica market
- Display back shows a finished movement instead of a blank plate
- Case polishing and bezel flatness hold up in normal wear
Cons
- Highest cost of the three tiers
- Power reserve usually falls well short of the real 192 hours
- Needs a careful seller check, since photos are often of a different unit
Best for: buyers who wear the watch with short sleeves, take it to dinners and office days, and want the caseback to survive a second look from a friend.
Mid tier: manual-wind build with simplified finishing
A common middle option uses a basic Asian manual-wind movement in a Portofino-style case. The front can look close to the top pick, but the movement finishing is plain, the power reserve display may be a static hand, and the crystal often lacks a proper anti-reflective coating.
Pros
- Noticeably lower cost than the decorated build
- Dial and case can still pass at conversation distance
- Simple movement is easy for a local watchmaker to service or replace
Cons
- Power reserve indicator may not function at all
- Movement decoration looks flat under the sapphire back
- Crystal glare gives it away against the genuine article
Best for: someone who wants the look for occasional wear and does not plan to show the caseback.
Budget tier: quartz or static-display builds
The cheapest IW545170 replicas drop a quartz movement into the case and fake the sub-dials with printed or glued-on elements. The tell is the seconds hand: it ticks once per second instead of sweeping.
Pros
- Lowest entry cost
- Set-and-forget timekeeping with no winding routine
- Fine as a prop or for a single event
Cons
- Ticking seconds hand is an instant giveaway on a hand-wound reference
- Static power reserve display kills the point of the model
- Case thickness and lug shape are usually wrong
- Plating and strap quality degrade within months
Best for: buyers who want a stand-in for a photo or costume and accept that it will not hold up as a watch.
Checkpoints before you pay
- Confirm the case measures about 45 mm across and sits close to the genuine profile, not a thick slab.
- Ask for a video of the seconds hand sweeping and the power reserve hand moving while the watch is wound.
- Compare dial photos against official press images: marker length, minute track spacing, and the position of the sub-dial and date.
- Look at the caseback: sapphire, correct engraving depth, and a movement that matches the layout of calibre 59210.
- Check the crown size and logo engraving, which is often shallow on cheap builds.
- Ask which strap is fitted and whether the buckle matches the case metal.
Red flags with sellers
- Only stock photos, no timestamped pictures of the actual unit
- Prices far below the rest of the market for a decorated hand-wound build
- No policy on dead-on-arrival movement or return shipping
- Pressure to pay outside a trackable method
- Claims of genuine IWC parts at replica prices
One practical note for US buyers: counterfeit branded goods are subject to seizure by customs, so treat the purchase as an at-risk transaction and keep the spend at a level you can absorb.
Verdict
If you want one recommendation for a fake IW545170, take the decorated hand-wound build with a working power reserve and a sapphire back. It costs more, but it gets the case shape, dial and movement view right, which is exactly what this Portofino reference is about. Drop to the mid tier only if you plan to wear the watch with a jacket sleeve most of the time. Skip the quartz tier unless the watch is a one-night prop, because a ticking seconds hand on a hand-wound dress watch defeats the entire exercise.