This new Calendrier Moonphase watch from Citizen features analog month/day/date and is water resistant to 100m. The 44mm black ion-plated stainless steel case and black dial are topped by a mineral crystal, while the black ion-plated stainless steel bracelet secures with a push-button deployment clasp. The timepiece is equipped with Eco-Drive technology, powered by light, so it never needs a battery.