Prospex Automatic Diver Prospex Diver’s Watch. Designed for those who treat life as the ultimate adventure, Seiko Prospex keeps moving forward, meeting every challenge with technological excellence and winning design. This rugged timepiece features a black uni-directional rotating elapsed timing bezel, a clean black dial for easy visibility, and a coordinating silicone strap. The 24-jewel automatic movement beats at a frequency of 21,600 vibrations per hour, with a power reserve of approximately 41 hours, and offers manual winding capability. Based on an iconic Seiko case design, this rugged and stylish watch follows ISO standards for scuba diving at depths of up to 200 meters. Crafted of stainless steel, with screw-down crown and caseback, date calendar, and LumiBrite hands and markers. 200m Water Resistant CASE DIMENSIONS: DIAMETER: 45 mm THICKNESS: 13.42 mm CASE: Stainless steel case CRYSTAL MATERIAL: Hardlex crystal WATER RESISTANCE: 200 meters (660 feet), follows ISO standards and is suitable for scuba diving DIAL COLOR: Black STRAP: Black silicone strap LUG WIDTH: 22 mm MOVEMENT: Automatic Caliber 4R36 21,600 vibrations per hour 24 jewels Power reserve: approximately 41 hours
