The Watch: Seiko Prospex Solar Brown Leather Strap Men\'s Aviation Chronograph SSC425P1 This Seiko Prospex Solar Brown Leather Strap Men’s Aviation Chronograph (SSC425P1)  is a remarkable aviation timepiece. The chronograph can be used in conjunction with the trigonometric slide rule to make vital calculations about distance, fuel consumption and speed, while the solar driven battery’s six-month power reserve delivers the kind of reliability Seiko is famed for. Styled to imitate the classic aviation chronographs of yesteryear, the Seiko Prospex Brown Leather Strap Men’s Aviation Chronograph delivers both on the land and in the air.   Key Features: Solar Powered Leather Strap Date Window Chronograph Complication   The Family: Prospex The Seiko Prospex family uses Seiko’s innovative ethos to combat the watchmaker’s greatest challenge, adventure sports. Whether at sea, on land or in the sky, this collection of timepieces will deliver trademark Seiko precision and reliability in even the most adverse of weather conditions.   The Brand: Seiko Seiko’s 135-year history has been marked by a ceaseless determination to innovate in every aspect of the watchmaker’s art. By embracing this mantra, Seiko has been responsible for a string of industry-leading advances in the technology of time, such as the world’s first quartz watch, the world’s first TV watch, and the Seiko Kinetic, the first watch ever to generate its own electricity from the movement of the wearer. Seiko are unique in that they manufacture every aspect of every watch in-house, with this ruthless pursuit of perfection even including growing their own quartz crystals and sapphires.