IWC Portofino IW544805 See‑Through Case‑Back Watch

Case: 316L stainless steel
Dial: Small seconds sub‑dial at 6 o’clock, stop‑seconds function, baton markers, Roman numerals, moon‑phase display at 12 o’clock, sword‑shaped hour & minute hands
Crystal: Double‑sided anti‑reflective arched coated sapphire crystal
Strap: Italian calfskin leather
Movement: Self‑developed automatic mechanical movement