The replica IW376055 is a copy of IWC's Aquatimer chronograph, a steel dive watch with an internal rotating bezel, a chronograph, and a day-date window at 3. Solid copies use an automatic 7750-family movement in a 316L case with sapphire crystal, and they sell for about $250 to $600. Cheap versions run quartz, skip the screw-down pushers, and look thin next to the real watch.

What the Original Reference Gets Right

IWC built this reference as a tool watch. The case is wide and slab-sided, the bezel sits under the crystal and turns with a second crown, and the dial stays readable in low light because the markers are large and the hands carry a lot of lume.

Two details matter most on the wrist: screw-down chronograph pushers and a day and date that share one window. Both are costly to copy well, and both are easy to check in listing photos.

How Replica IW376055 Watches Are Built

Copies of this reference come in two builds, and the build decides price, feel, and how long the watch lasts.

Automatic Copies

Good copies run a Chinese 7750 clone, so the layout matches: small seconds at 9, chronograph minutes at 12, chronograph hours at 6. The chronograph works, the day and date flip with the crown, and spare parts are common. Pusher feel is heavier than the original and the rotor makes more noise, but any watchmaker who handles 7750s can service it.

Quartz Copies

Quartz versions cost less and keep better time than most automatics. The problem is the chronograph: many quartz copies freeze the subdials or wire them to a 24-hour hand, and a ticking seconds hand never looks right on a dive chronograph.

What to Check Before You Buy

• Subdial function. Ask for a video with the chronograph running. All three hands should move and reset to zero.
• Pusher type. Screw-down pushers should unscrew and thread back with no grit or cross-threading.
• Bezel action. The inner bezel should turn in both directions with clear detents and no slack.
• Dial print. Look for sharp text, aligned markers, and a date window that sits level.
• Case finish. Brushed sides, polished bevels, and lugs that meet the bracelet end links with no step.
• Lume. Charge it under a lamp for 30 seconds and confirm the glow is even, not spotty.

Where Cheap Copies Fall Apart

Bezel and Crown Action

A cheap inner bezel wobbles, spins free, or stops halfway. That is the first thing your fingers find on a dive watch, so a loose bezel spoils the watch even when the dial looks correct.

Dial Printing and Lume

Low-tier dials show thick text, uneven marker rings, and lume that fades within minutes. The date font is another tell: it runs too wide or too bold.

Bracelet and End Links

End links that sit proud of the case, sharp clasp edges, and rattling pins all appear on cheaper builds. A rubber strap hides more of these flaws than a steel bracelet, which is why many buyers start there.

Water Resistance: What a Replica Can and Cannot Do

The original carries a dive rating. A replica does not, even when the caseback is engraved with the same number. Gaskets, crown threads, and caseback sealing on copies vary by batch, and no factory pressure-tests each unit.

Treat a replica as splash resistant. Keep it out of showers, pools, and salt water unless a watchmaker has pressure-tested that exact watch first.

Price Tiers for the Replica IW376055

• Under $120. Quartz, plated case, frozen subdials. Skip it.
• $200 to $350. Entry automatic, decent dial, weak bracelet, no real water protection.
• $350 to $600. Better 7750 clone, working screw-down pushers, sapphire crystal, solid end links. This is the range most buyers should target.

Above that, you are paying for finishing and lume quality rather than function. Ask what changed before you spend more.

Care and Servicing

A 7750 clone needs a service every five to seven years, or sooner if it starts losing time. A service runs $100 to $200 at an independent watchmaker, which is a real cost to weigh against the purchase price.

Keep the crown and pushers screwed down when the watch is off your wrist. Rinse the case with fresh water after contact with sweat, and store it away from magnets and speakers.

Frequently Asked Questions

Is the replica IW376055 waterproof?

No. Treat it as splash resistant. The caseback marking copies the original rating; it is not a test result for that specific watch.

Which movement should I buy?

The automatic 7750 clone. It costs more than quartz, but the subdials work, the seconds hand sweeps, and parts and service are easy to find.

How close is a good replica to the original?

A top-tier copy passes for the same watch from a step away. Up close, the gaps show in bezel feel, dial print, and case weight.