This Seiko SSH105J1 Astron watch is limited to just 800 pieces and combines a 42.8mm round shaped black coated titanium case and bracelet with a triple folding clasp and push button. It has a blue analogue dial with Lumibrite coated hands and indexes as well as a day and date display, all of which is protected beneath super clear coated dual curved sapphire crystal glass. The watch also has: a perpetual calendar to 28 February 2100, dual time function, GPS signal for automatic time adjustment, power reserve display, and world time function. Power is generated by the Calibre 5X53 solar powered movement which can operate for approximately 6 months when fully charged. This model also has a water resistance of up to 200 metres.