This men's citizen eco-driveâ® perpetual chrono a-t watch is constructed in black ion-plated stainless steel and features a non-reflective crystal, luminescent hands, chronograph, 12/24 hour time, and daily alarm in a 42. 0mm case. Citizen eco-driveâ® technology harnesses the power of any light source so it never needs a battery. The perpetual atomic-time feature means the watch automatically adjusts for odd and even months and leap years through the year 2100. The radio-controlled accuracy receives signals from the usa, europe and japan. This watch is water-resistant up to 200 meters and secures with a black ion-plated stainless steel link bracelet with hidden push-button deployment clasp. This watch includes a five-year limited manufacturer warranty, with an additional one-year warranty upon registering your watch with citizen. We are an authorized citizen dealer.