Citizen Eco-Drive Men's Corso Gold-tone watch for the ultimate classic vintage style, the Corso from Citizen features a 40mm gold-tone case made of stainless steel. The dial is an elegant champagne color, perfectly accented with the ash brown leather strap that rounds out the look. Advanced features include a day/date function, as well as Eco-Drive technology, so it is powered by light and will never require a battery.