The complete set of IWC Portuguese series IW371605 • Case: Stainless steel, 41mm in diameter, 12.4mm in thickness • Movement: Automatic Cal.69355 chronograph movement, 46-hour power reserve, transparent back cover • Dial: Silver-white radial dial, Arabic numeral hour markers, blue steel hands ◦ 12 o 'clock position: 30-minute counter ◦ 6 o 'clock position: 12-hour counter ◦ 9 o 'clock position: Small seconds dial • Strap: Original black fishskin strap with pin buckle Automatic chronograph, no calendar window; Blue steel chronograph hands, classic Portuguese chronograph layout.