IWC, Da Vinci series, model: IW356605, automatic mechanical, stainless steel, case diameter: 40.4 mm Dial design: Gradient deep grey sunray dial, retro Arabic numeral hour markers, golden willow-leaf hour and minute hands, square date window at 6 o 'clock. The outer ring has minute markers on the track, and the overall layout is simple and elegant with three hands. Case and strap: 40.4mm stainless steel round case, signature curved lugs; It is paired with a five-link stainless steel strap that fits the wrist well and is suitable for both business and casual wear. Detail markings: The dial is printed with the words "IWC SCHAFFHAUSEN" and "AUTOMATIC", and the case back is a transparent sapphire case back. Series Positioning: The Da Vinci series is named after Leonardo Da Vinci and focuses on round and retro dress watches. With soft lines, it differs from the tough style of the Portuguese series and is versatile for commuting.