Presage Style '60s Collection Inspired by the styles of the 1960s, including the 1964 "Crown Chronograph," Japan's first watch with a stopwatch function Fine mechanical watchmaking from Japan Automatic with manual winding capability 21,600 vibrations per hour Power reserve: approximately 41 hours 23 jewels Black dial Date calendar Beige LumiBrite hands and markers Box-shaped crystal Black bezel Screwdown see-through caseback Case diameter: 40.8mm Stainless steel case with black hard coating Black deerskin strap Water-resistant to 5 bar, 50 meters (165 feet) Caliber 4R35