This watch is also known as: IW3764-02 IW376402 3764-02 With its unrivaled Da Vinci calendarchronograph movement IWC heralded the arrival of a new age in mechanics that it marked a turning point in the entire history of watchmaking. The IWC Da Vinci Model # 376402 (IW3764-02) mens watch signals yet another new departure with its new IWC Calibre 89360 engine with 68-hour power reserve 28800vph 40 jewels. This automatic timepiece features hours minutes seconds sub-dial with stop function flyback chronograph and date display at 6 oclock position. This IWC Da Vinci Chronograph 376402 in fabulously designed tonneau-shaped 43.1mm x 51mm 18K rose gold case fixed bezel and sapphire crystal exhibition caseback also comes in dark brown crocodile leather strap with 18K rose gold deployant clasp. The silver dial with stick indicators is protected by a double-coated convex pressure-drop resistant sapphire crystal. The IWC Da Vinci Chronograph 376402 is water-resistant down to 30 meters (100 feet) which is suitable for splashing and light rain but not for swimming or diving.