Seiko Mens Sportura Direct Drive Kinetic - Blue Face - Bracelet - DateSeiko's Sportura Kinetic technology is reliable, accurate and powered by the motion of your wrist. Featuring Seiko's Direct Drive indicator that offers power reserve and real time power indication. This watch will keep running, approximately one month, on a full charge, if you decide not to wear it for a while. Seiko Kinetic movement is powered by the motion of your wrist with the accuracy of a quartz watch One month power reserve on a full charge