Seiko Corporation of America is a pioneer in manufacturing wrist watches. It believes that the wrist watch is the most intimate personal accessory of an individual. They live in harmony and interact with the wearer and offer a reassuring and emotionally satisfying bond. The company is thus focused on Emotional Technology. The best-selling watch categories catering to different fields including sports are Le Grand Sport, Seiko Clocks, Solar, Astron, Grand Seiko, Ananta, Sportura, Velantra, Tressia, Premier, and Coutura. The 4 technologies specialized by Seiko include Spring Drive, Spring Drive Kinetic, Kinetic (mechanical), and mechanical quartz. With their focus on the product of wrist watch, SEIKO quartz has really brought innovation in their field.