Franck Muller · Cintrée Curvex · Iron Croc · chronograph · on Amazon
A steel watch with crocodile skin.
Franck Muller’s Cintrée Curvex is the curved tonneau that made the brand in the 1990s: a barrel case bowed from top to bottom, with numerals so large they run off the edge of the dial. The Iron Croc takes that case in steel and embosses the entire thing, bezel, flanks and dial, with a crocodile-scale relief, then puts it on a real crocodile strap so the pattern continues onto the wrist. This one is the chronograph, two counters and a date at six, automatic, about 39.5 by 55mm. Sold on Amazon by an independent dealer.

Case
Curved tonneau 7880, about 39.5 x 55mm, steel with crocodile-scale relief, curved sapphire, 30m
Listing title and rows; Franck Muller 7880
Movement
Calibre FM 7000 automatic chronograph (Valjoux 7750 base), about 42 h
Amazon rows: Swiss automatic, chronograph; Franck Muller
Dial
Silver crocodile relief, oversized black numerals, two counters, date at 6
Amazon rows: silver dial; photograph
Strap
Black crocodile, steel deployment clasp
Listing title; Amazon rows: deployment clasp
Dial text
The photograph reads Gold Croco; the title says Iron Croc. Ask which dial ships
Listing photograph vs title, 2026-09-13
Listing
Independent dealer (Luxor Watches on the day), 30-day returns; condition not stated
Amazon buy box, 2026-09-13
The curved barrel, and the skin on it
Franck Muller founded his company in 1991 and built it on a shape: the Cintrée Curvex, a tonneau case curved along its length so it wraps the wrist, with a crystal and a movement holder curved to match. The numerals are the other signature, tall art-deco figures stretched to fill the barrel, the bottom ones so large they read as decoration first and digits second.
The Croco versions take that case and stamp a crocodile-scale pattern into every surface, the bezel, the flanks, the lugs and the dial itself, so the watch reads as one continuous hide from the crystal to the strap. Iron Croc is the steel version; Gold Croco is the same thing in gold. On the chronograph the two counters sit at three and nine and the date sits at six, all of it cut into the relief.

Reading the listing
The title and the rows agree with each other: Iron Croc, 7880CC-CRO-IRON-BLK, silver dial, Swiss automatic, chronograph, crocodile leather, deployment clasp, tonneau, 30 metres. The description underneath is a machine-translated blurb and adds nothing. The photograph shows the steel crocodile-relief case and a chronograph dial, but the dial in it reads Gold Croco, which is the sibling reference’s text; either the dealer used the wrong photograph or the watch has that dial. Ask which dial ships before buying.
Whether the watch is new with Franck Muller’s warranty is not stated in the rows we read; ask, and ask for the box and papers. Every figure here comes from the listing and from Franck Muller’s published description of the 7880 chronograph, not from handling the watch.

Buying it on Amazon
This is a regular Amazon listing from an independent dealer, Luxor Watches on the day we read it, with Amazon’s 30-day return window; it is not a Luxury Stores pre-owned unit. The second button opens the live search for Iron Crocs in case this one has sold.
Franck Muller Cintrée Curvex chronographs have resold for well under new and close to what pre-owned buyers paid, sometimes more, sometimes less; that is a pattern, not a promise, and nothing here is investment advice.

Specs
- Reference
- 7880 CC AT CRO IRON
- Case size
- About 39.5 x 55mm, curved tonneau (7880 case)
- Case material
- Stainless steel, crocodile-scale relief on case and dial
- Movement
- Automatic chronograph, Franck Muller calibre FM 7000 (Valjoux 7750 base)
- Caliber type
- FM 7000, automatic
- Crystal
- Sapphire Crystal, curved
- Water resistance
- 30m (3 ATM)
- Power reserve
- About 42 hours
- Complications
- Chronograph, date at 6
- Origin
- Swiss Made
Specifications as published by Franck Muller. We research from manufacturer documentation and published sources rather than hands-on testing. Researched 2026-09-13.
Verdict
A steel Cintrée Curvex chronograph with crocodile skin embossed into the case and dial, on Amazon from a dealer: the most Franck Muller watch Franck Muller makes, with one question to ask first.
Strengths
- The curved tonneau that built the brand, in steel
- Crocodile relief across case, dial and strap; nothing else looks like it
- Automatic chronograph on a proven 7750 base
- Amazon’s return window on a dealer listing
Trade-offs
- Photograph reads Gold Croco, title says Iron Croc; ask
- Condition and warranty not stated; ask
- 30 metres; keep it dry
- The relief and the numerals are loud by design
Buy it if
Someone who wants the Franck Muller shape at full volume and is comfortable buying from a dealer with the return window as the safety net.
Skip it if
You want a quiet watch, or a listing whose photograph matches its title before you decide.
FAQ
The Cintrée Curvex curved tonneau in steel with a crocodile-scale relief embossed into the case and the dial, on a crocodile strap. Gold Croco is the same design in gold. This listing is the chronograph version, reference 7880 CC.
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Sources
- Franck Muller Cintrée Curvex, official collection page
- Amazon marketplace listing (independent dealer), read 2026-09-13
Researched and last updated 2026-09-13. We do not test watches in hand; every figure above is traceable to the manufacturer or the sources listed here.
Franck Muller Cintree Curvex Iron Croc chronograph 7880 CC (steel, crocodile-relief case)
Reference 7880 CC AT CRO IRON · $25,000+
Prices and availability change; the band above is a research figure, so check the current listing.
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