Citizen Sky AT8391-52H Promaster Sky Eco-Drive Super Titanium horloge

The Promaster Sky AT8391-52H combines a sophisticated silver-grey design with advanced functionality. Its light-grey dial features three recessed subdials, luminous baton markers and hands, a date window, and a graduated tachymeter bezel from 60 to 140. The radio-controlled Eco-Drive movement charges through sunlight and artificial light, while world time and a perpetual calendar reduce manual adjustments. Crafted from titanium with sapphire glass, the 40.5 mm case remains comfortably lightweight.