Short answer
"Fake Top Gun chronograph 44.5mm" names replica versions of the IWC Pilot's Watch Chronograph Top Gun. The 44.5mm figure is the case diameter of the genuine model, reference IW389101, plus the later 44.5mm Top Gun chronographs such as IW389401 and IW389103. Replicas copy the case shape, dial layout, and strap. None of them contain an IWC movement.
Genuine specs for the 44.5mm Top Gun chronograph
- Case diameter 44.5mm, thickness about 15.7mm.
- Case in black zirconium oxide ceramic. Caseback, crown, and pushers in titanium.
- Movement: IWC caliber 69380, automatic, 46-hour power reserve, 28,800 vibrations per hour.
- Dial: black. White numerals. Day and date window at 3 o'clock.
- Subdials: running seconds at 9, 30-minute counter at 12, 12-hour counter at 6.
- Sapphire crystal with antireflective coating on both faces.
- Water resistance 6 bar, about 60 meters.
- Black textile strap with a titanium pin buckle.
Size in context
The Top Gun chronograph line comes in two sizes. The 44.5mm case is the larger one. The other is 41mm, used on references such as IW388106. A 44.5mm case sits wide on a wrist under 7 inches. Buyers who want the Top Gun look with less bulk look at the 41mm references instead. Replica sellers list both sizes, and a listing that says 44.5mm can ship a case that measures less on a caliper. Measure the case before you rely on the number.
Movement in the replicas
Most replicas of this dial layout run a Chinese clone of the Valjoux 7750, sold as the Asia 7750 or A7750. That base matches the IWC 69380 layout: running seconds at 9, 30-minute counter at 12, 12-hour counter at 6, day and date at 3. The clone beats at 28,800 vibrations per hour and quotes 40 to 48 hours of reserve. Sellers quote a range of daily rates. Independent timing runs show a wide spread, and no single figure holds across a batch. No replica uses the IWC 69380. Service parts for the clone are sold by watch material suppliers, and an independent watchmaker can regulate or replace one.
Case material and weight
Genuine ceramic is sintered zirconium oxide. It is light and hard. Many replicas use 316L stainless steel with a black PVD or DLC coating. Steel and coating weigh more than ceramic and titanium, so a scale is a fast check. I have no verified weight figures for replica batches, and they change between production runs. Coated steel shows a bright metal scratch line when the coating wears through. A smaller number of replicas use a ceramic case. Ask for a material statement in writing if the material matters to you.
Water resistance
The genuine watch is rated to 6 bar. Replica cases carry no rating a buyer can verify. Gaskets and case tube fit differ between batches. Do not swim or shower with a replica. A watchmaker can pressure test one case, and the result applies to that case at that time.
Checks on the watch itself
- Read the dial print. Compare stroke weight on the numerals and the "IWC" and "SCHAFFHAUSEN" text.
- Look at the day and date window at 3 o'clock. The discs must center in the aperture.
- Start and reset the chronograph. The seconds hand returns to 12 with no bounce.
- Press the pushers. Titanium pushers on the genuine watch have firm, short travel.
- Check caseback engraving depth, font, and reference number. The 44.5mm black ceramic Top Gun is reference IW389101.
- Ask for a movement photo and a caseback photo. Stock photos tell you nothing about the unit you will receive.
Legal status in the United States
Counterfeit watches are illegal to sell and to import. 18 U.S.C. 2320 covers trafficking in counterfeit goods and carries up to 10 years in prison for a first offense. U.S. Customs and Border Protection seizes counterfeit shipments, including single-item personal imports. "Top Gun" is a Paramount Pictures trademark used by IWC on this line. IWC Schaffhausen is a Richemont brand, and a replica has no IWC warranty or service. Passing a replica off as a genuine watch is fraud.