approximately 70 hours of power reserve
Rolex calibre 9001 automatic movement
month display via 12 apertures around the circumference of the dial
40mm 904L stainless steel superalloy case
center links set with diamonds
Rolex Yellow Rolesor Cosmograph Daytona 40 Watch - Black Index Dial - 116503 bki Iii approximately 70 hours of power40mm Yellow Rolesor case with 904L steel monobloc middle case, screw down steel back, screw down crown and push buttons with Triplock triple waterproofness, fixed 18K yellow gold bezel with engraved tachymetric scale, scratch resistant sapphire crystal, black dial, index hour markers, Rolex calibre 4130 self winding movement with chronograph central second hand, 30 minute counter at 3 o'clock, and 12 hour counter at 9 o'clock, approximately 72 hours