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An everydaywatch that never stops
When the CRYSTRON SOLAR CELL debuted in the 1970s, neither the solar cell (which generated energy) nor the power cell (which stored it) had sufficient generating capacity or battery life for the watch to become a realistic part of anyone's everyday life. The engineers at CITIZEN were acutely conscious of these limitations.
But as the 1980s got under way, thinner solar cells capable of generating power from indoor light and power cells with longer battery life appeared. Thanks to these advances, CITIZEN's light-powered watches made a major leap forward. We made a series of improvements and innovations with a view to creating "a watch that never stops and integrates easily into everyday life." In 1986, we debuted a model that could keep running for eight days (roughly 200 hours) on a single charge.
In 1995, through the addition of a lithium-ion power cell, we were able to develop a model with a running time of six months on a single full charge. This was a landmark achievement that led directly to Eco-Drive of the present day.
* Model shown is from 1993
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