Citizen Solar Powered Watches
Our pursuit of innovation has allowed us to bring to the market many light-powered watches with advanced functions and designs. However, reducing their size was thought impossible by CITIZENs R&D department. 2004-02-13. X . In case no power is generated, an Eco-Drive Thermo movement will save power by moving the second hand in ten second increments until the production of thermo electricity is resumed. Citizen has stopped making Eco-Drive Thermo watches. Darkness Is not a Concern One of the factors that distinguishes CITIZENs Eco-Drive from other methods of keeping watches running at all times is its power life. Solar cell and secondary battery life expectancy. According to Citizen, experimental data showed the solar cell and secondary battery will last for more than 10 years. According to Citizen Europe, laboratory tests showed that after 20 years the secondary battery retains a power storage capacity of 80% of its initial capacity.. Home › Watches › Citizen Eco-Drive Citizen Eco-Drive It starts with a simple, yet revolutionary concept: a watch that never needs a battery. In addition to the first three Eco-Drive models introduced in 1995, Citizen marketed numerous other Eco-Drive models during the 1990s, including the 6.05mm (0.238in) thick Eco-Drive Slim of 1996..
Eco-Drive CITIZENs proprietary light-powered technology, was called Eco-Drive . Then, in 1995, CITIZEN added a secondary lithium-ion cell for power storage, resulting in a light-powered analog watch that runs for six months or more on a full charge. ^ a b Citizen Service & Support FAQ EcoDrive ^ Citizen Watch Europe GmbH: ECO-DRIVE Technologie (German) (archived 2007) ^ "Products for CITIZEN" (PDF). Citizen Eco-Drive technology harnesses the power of light-from any natural or artificial light source-and converts it into energy. Archived from the original (PDF) on 2007. See also. Retrieved 2012-04-22. The Eco-Duo Drive technology failed to attract consumer interest and Citizen has since stopped making use of the unique movement. This battery type became available in the early 1990s, enabling an Eco-Drive 7878 movement to run 180 days on secondary power before requiring recharging via light exposure a marked improvement in energy storage over previous light-powered watches. The technical platform that made the Eco-Drive concept possible was the Eco-Drive caliber 7878 movement.
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