40mm 18K yellow gold case, screw-down back, screw-down crown with triplock triple waterproofness system, fixed bezel with engraved tachymetric scale in 18K yellow gold, scratch-resistant sapphire crystal scratch-resistant sapphire, white dial, index hour markers, 4131, manufacture Rolex perpetual, mechanical chronograph, self-winding movement with centre hour and minute hands, small seconds hand at 6 o'clock, chronograph via centre seconds hand, 30-minute…
