SJ presents the ultimate version of the IWC Portugieser Series IW390704 OB2, with a diameter of 45x14.5 mm, featuring the Cal.89361 chronograph movement. It boasts exceptional luminosity and has undergone ultimate modifications: .1. Double-sided domed sapphire crystal glass.2. The case is crafted with top-level CNC technology, polished through multiple processes for clear and smooth lines.3. The strap has been upgraded to an imported rubber strap that is odorless, dust-resistant, and does not turn white.4. The buckle has been upgraded to the original factory Earth long buckle.5. The dial is calibrated for gloss, with details that closely resemble the genuine article, crafted with care to rival boutique quality.SJ meticulously creates ultra-realistic product images for your consideration, highly recommended for men seeking a multifunctional mechanical watch.