The IWC Ingenieur SL Chronometer (Reference IW3521-01) with a white dial and stainless steel finish is a highly coveted neo-vintage luxury timepiece manufactured from roughly 1993 to 2001. It represents a significant chapter in the history of the IWC Ingenieur collection, perfectly merging the legendary design footprint of Gérald Genta with high-end external movement engineering.

• The Genta DNA: The IW3521 retains the iconic barrel-shaped two-body case, straight lugs, and flat bezel secured with five exposed face screws. This draws direct visual lineage to Gérald Genta’s 1976 Ingenieur SL Jumbo.

• The "Watchmaker's Watchmaker" Heart: The inclusion of the ultra-thin Jaeger-LeCoultre movement base (also utilized in variations by Patek Philippe and Audemars Piguet) makes it a collector's favorite. It is celebrated as the fifth and final Ingenieur SL to utilize a JLC caliber.

• Rarity: The crisp white dial variation is significantly scarcer than its black-dial counterpart. Tracking a pristine example down on the secondary market often requires sorting through dedicated enthusiast platforms like Chrono24 or EveryWatch.

• Case Diameter34.00 mmA compact, elegant mid-size footprint that wears with surprising presence due to its geometric design.

• Case Thickness8.80 mmExtremely thin, making it highly wearable under cuffs.

• MovementIWC Caliber 887/2Powered by an automatic ébauche sourced from Jaeger-LeCoultre (JLC Caliber 889/2).Rotor SegmentPlatinumFeatures a heavy solid-platinum rotor segment to maximize winding efficiency.

• CertificationCOSC ChronometerProudly bears the "Officially Certified Chronometer" designation on the dial—a rarity for IWC.Anti-Magnetism40,000 A/m (~500 Gauss)Protected by a legendary inner soft-iron Faraday cage shielding.

• Water Resistance120 meters (12 ATM)Equipped with a screw-down crown and screw-in caseback.

• Dial DetailsWhite / CreamFeatures applied faceted gold-tone baton indices and hands, often featuring aged tritium lume.

• BraceletIntegrated SteelFinished in a true, tightly engineered industrial Genta style with a fold clasp.