The scratch-resistant rose gold-colored coating and silicone strap of this 5X solar-powered ASTRON GPS model make it swing between modern and vintage. A successful combination, as this watch takes the form of the first Seiko ASTRON quartz model from 1969, integrating the amazing functions of the 5X caliber. With the time zone adjustment via GPS in just three seconds, the perpetual calendar or, again, the nearly invisible sapphire crystal, this timepiece will never cease to amaze you.