Prospex Alpinist 1959 Sport Watch Reinterpretation Automatic with manual winding capability 21,600 vibrations per hour Power reserve: approximately 70 hours 24 jewels Blue patterned dial Date window LumiBrite hands and mountain-shaped markers Curved sapphire crystal with anti-reflective coating on the inner surface Screwdown crown and see-through caseback Case Diameter: 38.0mm Stainless steel case and bracelet Tri-fold push button release clasp Water-resistant to 20 bar, 200 meters (660 feet) Caliber 6R35