Limited edition of 3500 pieces seiko astron watch gps solar the earth at night limited edition sse091j1 seiko watches the inventor of the first gps solar timepiece are now introducing the seiko astron gps solar world time watch and to celebrate this innovation seiko have released this seiko astron gps solar the earth at night limited edition watch this stunning timepiece boasts the 8x22 calibre movement which connects to four gps satellites using only the power of light to identify the