thumb|right|Citizen Holdings|Citizen Promaster Eco-Drive AP0440-14F Diver's 200 m manufactured in 2000. The 7878 caliber Eco-Drive movement used in this watch can run for up to 180 days on its secondary power cell. Four solar cell segments are just visible under the dial. thumb|right|Citizen Holdings|Citizen Attesa Eco-Drive ATV53-3023 analog-digital [[chronograph with 4 area Radio Controlled reception (North America, Europe, China, Japan). Manufactured in 2010.]] thumb|Citizen Eco-Drive METAL AW1365-19P featuring a light-absorbing "solar ring" instead of solar cell panels, allowing opaque me
thumb|right|Citizen Holdings|Citizen Promaster Eco-Drive AP0440-14F Diver's 200 m manufactured in 2000. The 7878 caliber Eco-Drive movement used in this watch can run for up to 180 days on its secondary power cell. Four solar cell segments are just visible under the dial. thumb|right|Citizen Holdings|Citizen Attesa Eco-Drive ATV53-3023 analog-digital [[chronograph with 4 area Radio Controlled reception (North America, Europe, China, Japan). Manufactured in 2010.]] thumb|Citizen Eco-Drive METAL AW1365-19P featuring a light-absorbing "solar ring" instead of solar cell panels, allowing opaque metal dials to be used. thumb|Example of the invisible solar cells thanks to VITRO technology, using the CB0021-06E radio-controlled watch model (from 2011 to 2018).
Eco-Drive is a model range of watches manufactured and marketed worldwide by Citizen Watch Co., Ltd., powered primarily by light. As of 2007, the company estimated the drive system had eliminated the disposal of ten million batteries in North America.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).