Silver-tone stainless steel case. Features a unidirectional rotating bezel in silver-tone stainless steel, accented by an embedded black ring displaying tachymeter markings. The silver dial showcases luminous markers and hands for enhanced nighttime readability. Includes Arabic numeral minute markers at five-minute intervals around the outer rim alongside analog indicators. Date display positioned between the fourth and fifth hour marks. Equipped with a chronograph function featuring three sub-dials: one for 60-second measurement, another for 30-minute, and a third indicating elapsed hours. Powered by Sellita Calibre SW510A Automatic movement (derived from SW500-1), boasting 27 jewels, an approximate frequency of 28,800 vph, and a power reserve of about 48 hours. Boasts scratch-resistant sapphire crystal glass on the face. The watch includes a push/pull crown for time setting adjustment. Comes with a transparent case back allowing visibility into its mechanics. Sport watch design characterized by an analog dial type. Round case shape measures 42 mm in diameter and is 15 mm thick. Silver-tone stainless steel bracelet has a width of 22 mm, adjusted to fit a standard band length equivalent to eight inches on the wrist. Secured with a fold-over clasp closure mechanism. Water resistant capabilities reach depths suitable for swimming up to 50 meters (approximately 165 feet). Functions include chronograph operation, tachymeter measurement via bezel, date display, and precision analog timekeeping displaying hours, minutes, and seconds. Delivered as part of a gift set including an accompanying pen. Belongs to the Aviator Series collection. Swiss Made designation is noted on the watch label.