Silver-tone stainless steel case with a brown (cowskin) leather strap. Bi-directional rotating stainless steel bezel with an inlaid black ring. Black dial with luminous silver-tone hands and index hour markers. Minute markers. Tachymeter markings. Conversion scale around the outer rim. Dial Type: Analog. Luminescent hands and markers. Day of the week and date display at the 3 o'clock position. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hours. Hamilton calibre H-21-Si automatic movement with a 60-hour power reserve. Scratch resistant sapphire crystal. Transparent case back. Round case shape. Case size: 44 mm. Band width: 22 mm. Tang clasp. Water resistant at 100 meters / 330 feet. Functions: chronograph, date, hour, minute, second. Additional Info: his high-performance tool converts units, such as feet to meters or miles to kilometers, and currency. Aviation Series. Sport watch style. Watch label: Swiss Made. Hamilton Aviation Chronograph Automatic Black Dial