Silver-tone stainless steel case and bracelet. Silver-tone unidirectional rotating bezel. Black dial with silver-tone hands, index hour markers including minute markers on the tachymetric scale. Analog dial type featuring luminous coating between 4 and 5 o'clock for hand illumination. Chronograph movement with three sub-dials: measuring seconds (60-second), minutes (30-minute) and hours (12-hour). Automatic Breitling Calibre 01 movement, equipped with a column wheel mechanism. Contains 47 jewels and consists of approximately 346 parts. Beats per hour rated at 28,800 vph. Power reserve lasting about 70 hours. Scratch-resistant sapphire crystal. Screw-down crown for secure bezel engagement. Solid case back ensuring water resistance is maintained. Round shaped case measuring 44 mm in diameter and 17 mm thick. Silver-tone stainless steel band of width 20 mm. Clasp features a folding design with an integrated safety release mechanism. Water resistant up to 500 meters or 1650 feet, suitable for professional diving. Includes date function complication. Swiss Made label indicating origin and quality standard. Pre-owned condition.