Zenith El Primero Chronomaster 1969 42MM Stainless Steel Silver Dial Black Alligator Strap 0320404061.69C A934LQ Stainless Steel case, silver dial with blue and brown sub-dials. Tachymeter scale printed on outer flange/rim of the dial. Index hour markers. Automatic movement, Caliber 4061 beats at 36,000 vph, 50-hour power reserve. Watch Chronograph: 30 minute sub-dial counter at the 3 o'clock position. 12 hour sub-dial counter at the 6 o'clock position. Functions: Hours, Minutes, Large red central seconds, Small Seconds at 9 inside open-worked section, Chronograph, Power Reserve. Stainless Steel Tang Buckle with Zenith Hallmarking.