Soar to new heights with the modernized CITIZEN Promaster?Sky?timepiece. A chronograph with all the tools for professional use, featuring world time in 24 cities, radio control, perpetual calendar, alarm and power reserve indicator. Showcased here in a grey ion-plated stainless steel case, solid high-grade polished grey ion-plated stainless steel bracelet and a charcoal grey dial with red accents. Powered by Eco-Drive- the revolutionary light powered movement from Citizen, this watch has the ability to continuously recharge in any light source and can run for a minimum of six months even in the dark without any charge. This revolutionary earth friendly technology eliminates the need to change battery frequently and gives you hassle free timekeeping, never disappointing you when you need it the most. The Eco-Drive movement also comes with built-in Insufficient Charge Warning Function and Overcharge Prevention Function.