Seiko Premier Kinetic Retrograde SRN039P1 SRN039P SRN039 Men's Watch Among the recent (within a year or so) Seiko Premier watches, the Kinetic 5M84 caliber brought in a new functionality and helped the design part bump up a step higher. This time, Seiko’s Kinetic technology brings a power reserve that’s a hundred and eighty days long under normal usage – but that’s not the thing, you’ll be astonished how fast it makes up for it. Three shakes to bring it back from a dead stop! Features: Stainless Steel Case Stainless Steel Bracelet Kinetic Movement Caliber 5M84 Sapphire Crystal Black Dial Date Window Retrograde Day of the Week Indicator Screw See-Through Case Back Push Button Folding Clasp 100M Water Resistance Approximate Case Diameter 41.5mm