Eco-Drive, powered by any light source, eliminating the need for watch batteries. Sapphire Crystal. The PCAT from Citizen improves on this classic collection with a modern design, including a two-tone, rose gold stainless-steel 43mm case and a two-tone stainless-steel bracelet, capped off with a blue dial. It uses a Tachymeter bezel, and in addition to Eco-Drive technology, it includes advanced features such as atomic timekeeping with synchronized time adjustment in 43 cities worldwide, power reserve indicator, a perpetual calendar and a chronograph. This timepiece is the definition of sporty elegance, with a timeless style that can be effortlessly dressed up or down as the situation changes.