Zenith El Primero Pilot Automatic Chronograph 03.2430.4054/21.C721 Stainless steel case with a black leather strap. Fixed stainless steel bezel. Black dial with luminous silver-tone hands and Arabic numeral hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Date display at the 6 o'clock position. day of the week and month display at the 3 o'clock position. Chronograph - sub-dials displaying: two - 60 second and 60 minute. Zenith Calibre El Primero 4054 automatic movement with about 50 hours of power reserve. Anti-reflective scratch resistant sapphire crystal. Solid case back. Case size: 48 mm. Case thickness: 15.80 mm. Round case shape. Band width: 20.3 mm. Band length: 8 inches. Tang clasp. Water resistant to 100 meters / 330 feet. Functions: annual calendar, chronograph, column wheel, month, date, day, hour, minute, small second.