Boasting superior accuracy and an on-trend green dial, this Citizen Promaster Perpetual Chrono A-T Men\'s Watch will never need a battery thanks to its eco-drive technology. At A Glance  Presented on a stainless steel bracelet 45mm case size with 200m water resistance Green dial with chronograph sub dials White hands and markers with date window at 4 o\'clock Scratch resistant sapphire crystal glass Eco-drive technology with radio-controlled atomic clock synchronisation for superior accuracy