Prospex Black Series Limited Edition. 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 season, the popular Black Series introduces three exciting “Night Vision” Limited Edition designs, available only in a controlled-production run with the serial number on each caseback, all featuring the newly developed bright green LumiBrite, the most recognizable color in dark conditions, set on matte gray dials for reduced reflection and heightened visibility. Based on an iconic Seiko design, with a luxurious black ceramic uni-directional elapsed timing bezel and an edged case design inspired by the sharp angles of a Samurai sword, this dramatic timepiece, available in a limited edition of 8,000, includes a 23-jewel automatic movement which beats at a frequency of 21,600 vibrations per hour, with a power reserve of approximately 41 hours and manual winding capability. Following ISO standards for scuba diving at depths of up to 200 meters, this exceptional watch, crafted of stainless steel with black hard coating, also offers a magnified date calendar window, sapphire crystal, durable black silicone strap, and secure screwdown crown and caseback. 200m Water Resistant