Limited edition seiko astron watch gps solar ladies limited edition seiko astron watches unites time and space have you imagined a watch that unites time and space astron is going to change the concept of timekeeping astron knows its location and adjusts to the time zone of the placeceramic bezel with rose gold dials and sapphire crystal with anti reflective coatingperpetual calendar correct to the year 2100 supplier model numbersse021j1