Caliber 0100

Caliber 0100

Each individual second: The crystallised essence of time

This watch promises to do two things: To tell the time with a deviation of less than one second per year. And to express each and every second with true purity and beauty.

We refined all the elements of the watch in this crystallisation of CITIZEN technology. The most precise light-powered watch in the world* with annual accuracy of ±1 second. When every second is a miracle of purity.

*As of May 2021, for an autonomous analogue light-powered quartz watch, according to research by Citizen Watch Co., Ltd.



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The CITIZEN brand aims to become an integral part of users’ lives by tirelessly pursuing the next ideal in timekeeping accuracy, quality, design, and reliability.

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