Silver-tone stainless steel case. Black leather strap. Fixed silver-tone bezel. Black dial featuring luminous hands and stick hour markers with Arabic numeral indicators at 3,6,9,12 o'clock positions. Analog dial type with luminous elements for hours and minutes. Equipped with Panerai Calibre OP I movement based on ETA 6497-1, showcasing 17 jewels, 21600 vph bittings, and a 56-hour power reserve. Scratch-resistant sapphire crystal. Lever crown providing access to the date while protecting the mechanism. Engraving 'officine panerai' visible on the caseback which is screw-down in design. The cushion-shaped case measures 44 mm diameter and has a thickness of 14.5 mm. Secured by a tang clasp closure system. Water resistant up to 300 meters / 1000 feet depth, suitable for diving conditions. Swiss Made label indicates origin. Functions include hours and minutes display only.