Zenith El Primero Chronomaster Automatic Brown Dial Brown Leather Men's Watch 512161404775C713. Stainless steel case with a brown alligator leather strap. Fixed stainless steel bezel. Brown cut-out dial with rose gold-tone hands and index hour markers. Minute markers. tachymeter around the outer rim. Chronograph - sub-dials displaying: three - seconds, night/day indicator and 30 minute. Automatic movement. Zenith el primero caliber 4047 engine. Scratch resistant sapphire crystal. Pull / push crown. Skeleton case back. Case diameter: 45 mm. Case thickness: 15.6 mm. Round case shape. Triple folding clasp. Water resistant at 50 meters / 165 feet. Functions: night/day indicator, chronograph, tachymeter, date, hour, minute, second.