SJ Production Ultimate Edition IWC Portugieser Series IW390704 OB2 Diameter 45x14.5 Equipped with Cal.89361 Chronograph Movement Super Strong Luminous Ultimate Modification 1. Double-sided Domed Sapphire Crystal 2. Case CNC Top Craftsmanship with Multiple Polishing Processes, Clear and Smooth Lines 3. Upgraded Imported Rubber Strap, Odorless, Dust-resistant, Non-fading 4. Upgraded Buckle to Original Factory Earth Long Buckle 5. Dial Calibration, Gloss, Details Closer to Genuine, Crafted with Care, Designed to Compete with Retail Stores. SJ exquisitely recommends multifunctional mechanical watches for men, providing you with ultra-realistic product photos.