Limited edition of 7000 pieces seiko astron watch gps solar chronograph limited edition sse001j1 featuring a titanium case with super hard coating white dial and faceted ceramic bezel it is both recognisably astron and yet distinctively new it is offered with both a titanium with super hard coating and black ceramic bracelet and black crocodile strap making seiko astron watches as versatile as it is unique just 7 000 pieces will be made in this limited edition each with its own serial nu