Taking it up a notch with the reinvented Citizen Perpetual Calendar Chrono timepiece with a 1/20 second chronograph, perpetual calendar and dual time in a gray ion-plated stainless steel case and bracelet completed with a black dial. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number E820. Citizen watches are perfect for any occasion, u tilising the latest technology to create sleek and sophisticated designs. From the classic Quartz movements to the durable Eco-Drive technology that uses light as a power source and the Signature automatic watch. With over 50 designs, there's a timepiece for every personality. Be prepared to take on any adventure with Citizen Watches. Whether you're enjoying the rugged natural beauty of your favorite mountain top, or dressed for a formal event Citizen has a timepiece for you.