CITIZEN
A Japanese watch brand advancing watchmaking through proprietary technologies such as Eco-Drive and Super Titanium™.
CITIZEN's official platforms introduce watch collections, brand lines and core technologies. Key proprietary technologies include Eco-Drive — converting any kind of light, from sunshine to dim indoor lighting, into energy to power a watch — and Super Titanium™, a CITIZEN proprietary material made by treating titanium with DURATECT, the brand's surface-hardening technology. These technologies are presented through official technology pages alongside product and support information.
PROFILE Company & Brand Story
CITIZEN publishes official technology resources alongside product information and support content on its platforms.
Eco-Drive is positioned as a cornerstone technology, described as converting light into energy to power a watch and running for over six months on a full charge; CITIZEN cites 1976 as the year it released the world's first light-powered analogue watch.
Super Titanium™ is presented as a proprietary material made by treating titanium with DURATECT, CITIZEN's surface-hardening technology, reflecting the brand's material engineering approach.
CITIZEN also documents time-synchronization technologies (radio-controlled and GPS-based) through official pages, including model-dependent coverage notes for Satellite Wave GPS.
On citizen.jp, many brand lines are listed with dedicated pages, making it possible to explore collections by style and purpose while connecting to technology explanations and support resources.
Eco-Drive: powered by light
Eco-Drive is a proprietary CITIZEN technology that converts any kind of light into energy to power a watch and runs for over six months on a single full charge. CITIZEN states it released the world's first light-powered analogue watch in 1976.
Super Titanium™ + DURATECT
Super Titanium™ is described as a CITIZEN proprietary material made by treating titanium with DURATECT, CITIZEN's surface-hardening technology.
DURATECT: surface-hardening technology
On the Japanese technology pages, DURATECT is explained as CITIZEN's surface-hardening technology with different variations and properties (including disclosed hardness ranges for certain types).
Radio-controlled technology and GPS timekeeping are documented on official pages
CITIZEN provides official technology pages in Japanese describing radio-controlled watches and Satellite Wave GPS as time-synchronization solutions, including coverage notes such as "39 time zones" (model dependent) for Satellite Wave GPS.
Official brand lines listed on citizen.jp
The Japanese official site lists multiple brand lines such as The CITIZEN, Eco-Drive One, ATTESA, PROMASTER, Series 8, xC, CITIZEN L and more, with dedicated brand pages.
PRODUCTS Featured Products & Services
CITIZEN Eco-Drive Watch — Made in Japan
Light-powered Eco-Drive watches available across a range of styles. No battery replacement needed.
View DetailsCITIZEN ATTESA — Eco-Drive, Super Titanium™
ATTESA combines Eco-Drive and Super Titanium™ in a refined design for everyday wear.
View DetailsCITIZEN PROMASTER — Sport & Professional
The sports-oriented line with diver, pilot and land models for active use.
View DetailsThe CITIZEN — Flagship Dress Watch
The flagship line with refined finishing and top-tier Eco-Drive movements.
View DetailsMEDIA Media, Awards & Initiatives
- Official technology pages describe Eco-Drive, including a "powered by light" explanation, "over six months on a full charge," and the 1976 milestone for the world's first light-powered analogue watch.
- Official pages also describe Super Titanium™ as titanium treated with DURATECT, and provide Japanese-language resources for radio-controlled watches and Satellite Wave GPS.