Iwc, Portofino, model: IW391022, white dial gold hands three-eye chronograph, 42mm, case: Polished brushed stainless steel round case, diameter 42mm, thickness 13.1mm, suitable for the vast majority of men's wrists; Double-sided anti-glare sapphire crystal. Dial design The off-white radial dial, rose gold hands and bar hour markers create a soft and elegant visual effect ◦ Three-eye timing layout: ◦ 12 o 'clock position: 30-minute counter ◦ 6 o 'clock position: 12-hour chronograph accumulation dial ◦ 9 o 'clock position: Regular small seconds dial ◦ 3 o 'clock dual-window calendar: Simultaneously displays the day of the week and the date (TUE 7 is shown in the picture, Tuesday 7th) The outer circle speed measurement scale track serves both as decoration and for speed measurement The strap is a black fishskin strap with a stainless steel pin buckle, which is highly suitable for business formal wear. It is equipped with the IWC self-produced Cal.79320 automatic chronograph movement, featuring 25 gemstone bearings • Vibration frequency 28,800 times per hour, basic power reserve 44 hours The vertical clutch timing structure ensures stable timekeeping The transparent back cover allows you to admire the Geneva waves, blue steel screws and other polishing processes