Product descriptionBlack dial. Silver-tone stainless steel case with a black canvas band. Automatic movement. 30 meters / 100 feet water resistance. Fixed bezel. Tang clasp. Case size 37 mm x 11 mm. Seiko SNK809 Seiko 5 Watch.Amazon.comThe Seiko 5 Men's Automatic Black Strap Black Dial Watch is a stylish timepiece with the convenience of automatic movement. A uniquely designed, black dial features white Arabic numbers marking the hours on an inner circle and the minutes on an outer circle, while small, bar indexes encircle the dial on an outside minute track. Silver-tone hands with luminous fill make it easy to tell time day or night, and the slim second hand is detailed with a red accent. For added convenience, a day and date display are set at three o'clock. The polished stainless steel case extends to meet the black nylon strap, which wraps comfortably around the wrist and fastens with a traditional buckle. Water resistant to 30 feet (100 meters), this high-performance watch is perfect for everyday wear.This is an automatic mechanical watch. Automatic watches do not operate on batteries, instead, they are powered automatically by the movement of the wearer?s arm. If the main spring in your automatic watch is not wound sufficiently, timekeeping may become less accurate. In order to maintain accuracy, wear the watch for 8 hours or more per day, or manually wind the main spring by turning the crown. When not in use, automatic watches may be kept charged with an automatic watch winder - a watch storage unit which may be purchased separately. The Seiko StoryFrom Humble beginnings, Kintaro Hattori?s Vision for Seiko has become reality. A consuming passion for excellence - imprinted in our Corporate DNA passed from generation to generation. Seiko, for 125 years committed to the art and science of time. A culture of innovation connects a 19th century Tokyo clock shop with 20th century advances in timekeeping to an extraordinary 21st century "quiet revolution." Continually driven by dedication and passion, established a multitude of world?s first technologies? transforming the principles of timekeeping. The first quartz wristwatch - changed the history of time. The first Kinetic - marked a new era in quartz watch technology. In 1969, Seiko Astron, the first quartz wristwatch - was introduced. In an instant, Seiko exponentially improved the accuracy of wristwatches -And Seiko technology firmly established today?s standard in Olympic and sports timing. 1984, another celebrated first - Kinetic Technology - powered by body movement. Kinetic - a quartz mechanism with unparalleled accuracy -the driving force behind more world?s firsts. Kinetic Chronograph - the next generation of high performance timekeeping. Kinetic Auto Relay - automatically resets to the correct time. Kinetic Perpetual - combining the date perfect technology of perpetual calendar with the genius of Kinetic Auto Relay. And now Kinetic Direct Drive - move, and the watch is powered automatically. Or hand wind it and see the power you are generating in real time. In the realm of fine watches, time is measured by Seiko innovation - A heritage of dedication to the art and science of time.