Shop All
Calendrier Watches
An elegant collection of timepieces blends style and innovation and tracks the moon's phases. Sustainably powered with Eco-Drive technology, so any light source, even the moon, will keep perfect time.
POWERED BY ANY LIGHT
Eco-Drive
50 years ago, Citizen created Eco-Drive, the only. technology that harnesses light, any light, to power watches continuously and sustainably.




