Form Seiko, the Men's Presage Automatic Stainless Steel Watch features:  Stainless steel case and bracelet LumiBrite hands and marker Box-shaped crystal 23 jewels Tri-fold push button release clasp Automatic with manual winding capability Japanese mechanical watchmaking Approx. 21,600 vibrations per hour Power reserve of approx. 41 hours Screw down see-through case back  Case diameter approx. 40.8mm Water resistance: Up to 5 bar, 50 meters (165 feet) Imported.