Zenith El Primero Chronomaster 1969 Silver Dial Brown Leather Men's Watch 18.2040.4061/69.C494. 18kt rose gold case with a brown alligator leather strap with rubber lining. Fixed 18kt rose gold bezel. Silver dial with rose gold hands and index hour markers. Minute markers. tachymeter around the outer rim. Luminescent hands and markers. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hour. Automatic movement with a 50 hour power reserve. Scratch resistant sapphire crystal. Pull / push crown. Transparent exhibition case back. Case diameter: 42 mm. Case thickness: 14.05 mm. Round case shape. Tang clasp. Water resistant at 100 meters / 330 feet. Functions: hour, minute, second, tachymeter, escapement window. Luxury watch.