Citizen is a renowned watch brand known for its innovative technology and eco-friendly designs. It offers a wide range of timepieces that combine style, precision, and durability.


Citizen is a Japanese watch manufacturer founded in 1918, one of the world's largest watch producers. The brand is celebrated for pioneering Eco-Drive technology — a light-powered movement that charges from any light source and never needs a battery. Citizen also developed the world's first light-powered GPS-synchronised watch. The brand covers a vast range from everyday quartz to precision mechanical watches under the Citizen Calibre 0100 ultra-high-precision line.
Eco-Drive, introduced in 1976 and refined through subsequent decades, uses a photovoltaic cell beneath the dial to convert any light — solar, indoor fluorescent, even candlelight — into electrical energy stored in a rechargeable cell. A fully charged Eco-Drive can run in complete darkness for months to years depending on the model. The technology eliminates battery replacement entirely and is Citizen's most important technological contribution to the watch industry.
The Calibre 0100 is an Eco-Drive movement achieving accuracy of ±1 second per year — making it the world's most accurate light-powered analogue watch. It uses an advanced temperature-compensated AT movement with a 32,768 Hz quartz oscillator and an advanced trimmer capacitor system. Released in 2019 as a limited edition, it demonstrated that quartz accuracy could be pushed to extraordinary levels through engineering rather than switching to atomic time synchronisation.

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