mechanical watches · watch brand
IWC Portugieser Annual Calendar - AZ Factory Precision
The IWC Portugieser Annual Calendar men's mechanical watch, presented by USA WATCH EXPERT, stands as a pinnacle of craftsmanship. This timepiece, produced by the renowned AZ factory, seamlessly integrates hour and minute hands, date, day, month, and a perpetual motion display. Its exceptional functionality and elegant design invite connoisseurs to appreciate and own a masterpiece.
Case Excellence
The case measures 44mm by 15mm, offering a balanced thickness. The curved bezel is smoothly rounded, polished to a brilliant luster, maintaining AZ's high standard. The double-sided anti-reflective sapphire crystal is cut and polished with extreme precision, reflecting a high level of difficulty and a significant rejection rate. AZ has spared no effort to replicate the authentic style, delivering an experience nearly indistinguishable from the original.
Movement Fidelity
The original IWC52850 movement, comprising 326 parts, was meticulously disassembled for analysis. Through extensive testing and data evaluation, the structure has been aligned to 80% consistency with the authentic movement, while the adjustment method and tactile feedback achieve 100% synchronization, ensuring a superior user experience.
Strap and Buckle
The watch is fitted with an Italian calfskin leather strap, paired with an IWC original-grade folding buckle, offering both durability and comfort for daily wear.
Visual Showcase
Actual photographs of this reveal its striking resemblance to the genuine model, highlighting the attention to detail in every aspect.
Acquisition Details
USA WATCH EXPERT offers this exceptional timepiece at a competitive price range of $1000-$10000. For specific pricing and ordering inquiries, please contact our team for personalized assistance.


