citizen eco-drive world chronograph a-t mens watch, stainless steel with polyurethane strap, technology, blue (model: at8020-03l) citizen 43mm case sizeeco-drive technologyatomic time in 26 world citiesradio-controlled accuracy in 5 zones1/20 second chrono up to 60 minutesperpetual calendar12/24 hour time, and power reservenon-reflective sapphire crystalstainless steel, blue ion plating, and leather strapwater-resistance wr200/20bar/666ft