From Seiko, the Men's Prospex Automatic Alpinist Watch features: 1959 sport watch reinterpretation Brown leather strap Tri-fold clasp with push-button release Stainless steel case with gold finish Screw down crown and see-through case back Gradated green dial Automatic with manual winding capability Rotating inner compass bezel LumiBrite hands and markers Sapphire crystal with anti-reflective coating on the inner surface Approx. 21,600 vibrations per hour Power reserve approx. 70 hours 24 jewels Magnified date window Case diameter approx. 39.5mm Water-resistant to 20 bar, 200 meters (660 feet) Imported.