Tsuki-yomi A-T

Sport luxury styling merges with proprietary technology in the world’s first moon phase watch with Atomic Timekeeping innovation for superior accuracy. 

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BY1010-57H
Tsuki-yomi A-T Tsuki-yomi A-T
Tsuki-yomi A-T
Atomic Timekeeping / Super Titanium
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BY1018-55X
Tsuki-yomi A-T Tsuki-yomi A-T
Tsuki-yomi A-T
Atomic Timekeeping / Super Titanium
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BY1010-57L
Tsuki-yomi A-T Tsuki-yomi A-T
Tsuki-yomi A-T
Atomic Timekeeping / Super Titanium
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Purposeful Power

Eco-Drive

More than 40 years ago, Citizen created Eco-Drive, the only technology that harnesses light, any light, to power watches continuously and sustainably.

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