Worn & Wound
As Long as There is Light: A First-Hand Deep Dive on Citizen’s Eco-Drive Technology
In the horological sphere, we associate the 1970s with the quartz crisis, but there was a more significant threat facing the world at large: an energy crisis. Oil consumption was reaching an all-time high with widespread international travel and car ownership becoming more prevalent and mainstream. Simultaneously, domestic oil production was dwindling in many countries, increasing pressure on imports. The situation reached a crisis when OPEC (the Organization of Petroleum Exporting Countries) imposed an oil embargo in 1973. So, getting back to watches – you’re probably wondering, what’s the connection? Like the United States, Japan was one of the countries impacted by this energy crisis. In response, Citizen Watch Company established an internal initiative to work toward developing a more sustainable and eco-friendly power source for its timepieces. In short order, the brand looked toward solar cell technology and had developed its own light-powered prototype by 1974. Two years later in 1976, we saw the world’s first light-powered analog watch, the Crystron Solar Cell. This technology would later come to be called Eco-Drive and celebrates its 50th anniversary in 2026. You’ve probably already read about the flagship anniversary Eco-Drive model covered by our own Zach Kazan at its launch earlier this year, but this spring, in peak cherry blossom season, Citizen opened the doors of its manufacture for the first time in years to pull back the curtain on just how the ...
