A blue dial and blue ion-plated stainless steel create sophistication in this Perpetual Calendar watch from the CitizenΠSignature Collection. A dual-coated anti-reflective sapphire crystal protects the second hand, date window and luminous hands. This men's watch with 43mm case is water resistant to 300 meters, features a one-way rotating bezel, screw-back case, screw-down crown and secure push-button fold-over clasp. This Perpetual Calendar features Citizen Eco-DriveΠtechnology which means that it is fueled by light, any light, so it never needs a battery.