(54639) Jaeger-LeCoultre Q6012420 Duometre a Chronographe 601.24.20 6012420, 18K rose gold on a strap with an 18K rose gold deployant buckle, silver dial with applied rose gold Arabic numerals and hour markers & painted black index hour/minute markers, manual wind JLC caliber 380, the "Dual Wing" is powered by 2 separate mechanisms that drive the two features of the watch (time & chronograph), each of the two mechanism have their o...