Pairing modern technology with bold functionality, this men's citizen eco-driveâ® ecosphere watch features a 48. 0mm case, black dial with date display, chronograph sub-dials and tachymeter bezel. The reliable japanese quartz movement ensures accurate time keeping. Citizen eco-driveâ® technology harnesses the power of any light source so it never needs a battery. This watch is water-resistant up to 100 meters and secures with a black ion-plated stainless steel link bracelet with fold-over 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.