Citizen Perpetual Chrono A.T

The Perpetual Chrono A.T from Citizen is an updated take on an iconic design, with refreshed features and design aesthetic, while maintaining the classic dial for this iconic collection. Features include the tachymeter bezel, a world timer, perpetual calendar, power reserve indicator, chronograph, atomic timekeeping with synchronised time adjustment in 43 cities worldwide and radio-controlled atomic clock synchronisation. It has a gold-tone stainless steel bracelet and 43mm case, with a black dial for a timeless look that can be dressed up or down. Featuring Citizen Eco-Drive technology, powered by light, any light and never needs a battery.
 
Instruction Manual:
https://www.citizenwatch.ie/media/calibres/E660/E660.pdf