IWC Portofino, model: IW391007, automatic mechanical, automatic mechanical movement (improved based on ETA7750), 25 jewels, 44-hour power reserve, frequency 28,800 vibrations per hour, case: stainless steel, diameter 42mm, thickness 13.5mm, 30-meter water resistance for daily use, dial: Silver-white dial, dual calendar display of day and date at 3 o 'clock, three-eye timing layout (30-minute timing at 12 o 'clock, 12-hour timing at 6 o 'clock, small seconds dial at 9 o 'clock)