18K pink gold, self-winding, round-shaped, gentleman’s wristwatch, water-resistant with case-back screwed by four screws, 60-minute graduated inner bezel, silver colour dial with applied suspended Arabic numerals, subsidiary seconds at 6 and two horological complications: 
• 1/8 chronograph (activated by the two round-shaped push-pieces located on the case-band) 
• Half-instantaneous 30-minute counter (subsidiary dial at 12 o’clock)

Ref Variations: IW371480 ,