Hamilton Jazzmaster Performer Auto Chronograph watch model H36606730. Features a Brushed and Polished Stainless Steel case, Black Calfskin Leather strap with Folding clasp (Brushed and Polished). Equipped with Luminous Silver Hands and Stick Hour Markers on the black dial along with Minute markers around the outer rim; includes 3 sub-dials displaying Date, Small Seconds, and 12 Hours/30 Minutes. Powered by Hamilton Calibre H-31 engine (Swiss Automatic movement) offering Auto Chronograph functionality and a Water Resistance of up to 100 meters / 330 feet with Scratch Resistant Sapphire crystal. Unique Case Shape.