Authentic Swiss Zenith Chronomaster Open Automatic watch model 03.3300.3604/69.C823. Silver tone dial featuring column wheel, silver tone hands and index hour markers with minute track around the outer rim; three sub-dials displaying chronograph functions for tenths of a second, seconds, and minutes respectively. Stainless steel case measuring 39.5mm in diameter; blue fabric strap equipped with deployment clasp. Powered by Swiss Zenith Calibre El Primero automatic movement (article number included) providing approximately 60 hours power reserve. Sapphire crystal offers scratch resistance. Water resistant to 100 meters / 330 feet depth. This model is also known as article number 03.3300.3604/69.C823.
