The Men\'s Citizen Eco-Drive Perpetual Calendar AT model comes fully loaded, featuring a stainless steel case, water resistant to 200 metres, with matching solid stainless steel bracelet. The watch has a scratch resistant Sapphire crystal, and a black finished tachymetre bezel. The movement is Eco-Drive, so uses any available light to charge itself, and features radio controlled accuracy, as well as dual time, perpetual calendar, stopwatch and alarms. At 42mm wide, this is comfortably sized for all wrists without looking massive, and feels comfortable and solid on the wrist.