Zenith 03.2080.4021 Chronomaster Open Power Reserve, Stainless Steel Case on a Strap with Zenith tang buckle, Partially Skeletonized Automatic El Primero Movement, COSC, 30 Minute Chronograph Function with Minute Counter at 3 O'Clock, 50 Hour Power Reserve Indicator, Small Seconds at 9 O'clock, Black Dial with Applied Silver Roman Numerals, Display Back, Sapphire Crystal, Water Resistant to 30 Meters, Diameter: 42mm, Thickness: 14mm, Excellent condition but no box or papers.