Pairing modern technology, bold functionality and striking details, this men's citizen eco-driveâ® promaster altichron watch features a black dial with yellow accents and a multi-function sub-dial in a 50. 0mm titanium case. Additional functions include an altimeter measuring a up to 32,000 feet and electronic compass and power reserve. Citizen eco-driveâ® technology harnesses the power of any light source so it never needs a battery. This watch is water-resistant up to 200 meters and secures with a black rubber strap with buckle closure. 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.