approximately 39 months of power reserve
self winding perpetual calendar caliber 315 S QR movement with day
polished grey gradient esteel™ dial with luminous arabic numerals and hour markers
unidirectional rotating bezel with orange rubber and Liquidmetal diving scale
embraces a molded tachymetric scale
IWC Da Vinci Perpetual Calendar Chronograph Watch - 43.0 mm Stainless Steel Case - Slate Dial - Black Alligator Strap - IW392103 Split approximately 39 months of power43. 0 mm stainless steel case, 15. 7 mm thick, see through sapphire glass back, arched edge sapphire glass crystal with antireflective coating on both sides, slate coloured dial, calibre 89630 automatic movement with date, day, month, perpetual calendar, year indicator, chronograph, flyback, hours, minutes, small seconds, moonphase, approximately 68 hours of power reserve, black alligator leather strap by santoni. Water resistant to 3 bar.