The new Nautilus Chronograph Ref. 5980/1 A has a stainless steel case and integrated bracelet. This new an elegant sporty timepiece with a stopwatch function is the perfect result of the combination between the new self-winding, column-wheel-controlled caliber 28-520 C chronograph movement with the new 44-mm Nautilus case size . Chronograph with 60-minute and 12-hour monocounter at 6 o’clock. Date. Center sweep second hand (chronograph hand) Self-winding Water resistant: 120 m Sapphire crystal case back Fold-over clasp Case dimensions: 44 x 38.50 mm