{"id":26441,"date":"2021-08-07T15:33:44","date_gmt":"2021-08-07T15:33:44","guid":{"rendered":"https:\/\/www.horbiter.com\/citizen-eco-drive\/"},"modified":"2025-05-27T07:18:16","modified_gmt":"2025-05-27T05:18:16","slug":"citizen-eco-drive","status":"publish","type":"post","link":"https:\/\/www.horbiter.com\/en\/citizen-eco-drive\/","title":{"rendered":"The Citizen Eco Drive: history, models and features"},"content":{"rendered":"\n<p><strong>Citizen Eco<\/strong>\u2013<strong>Drive<\/strong> is a proprietary technology that sets <strong>Citizen<\/strong> watches apart from the competition. It is a pillar of the Japanese watchmaker\u2019s offering, that also includes mechanical low-end or high-end timepieces, marketed under the brand <strong>The Citizen<\/strong>, a direct competitor to <strong>Grand Seiko<\/strong>, exclusively available on the Japanese domestic market.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"citizen-promaster-eco-drive-aqualand-BN2037-11E-cinque\" src=\"\/media\/CACHE\/images\/uploads\/citizen-promaster-eco-drive-aqualand-BN2037-11E-cinque.90551244a5a6.jpg\" alt=\"citizen-promaster-eco-drive-aqualand-BN2037-11E-cinque\">Let me here briefly introduce the story of the <strong>Citizen Eco<\/strong>\u2013<strong>Drive<\/strong> technology, its pros and last but not least, a list of the most representative models equipped with this technology, in our opinion. When it first came out, the <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> technology appeared on selected timepieces and has since then extended throughout the entire catalog, including the <strong>Citizen Promaster<\/strong> sports collection, and their diving, aviator, and exploration inspired watches. Again, before digging into our most-loved <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> equipped timepieces, let\u2019s first take a look at the history behind it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-origins-of-the-eco-drive-system\"><a id=\"The origins of the Eco-Drive system.\" name=\"The%20origins%20of%20the%20Eco-Drive%20system.\"><\/a>The origins of the Eco-Drive system.<\/h2>\n\n\n\n<p>When the so-called \u201c<em>quartz crisis<\/em>\u201d shocked the industry in <strong>1970<\/strong>, with <strong>Seiko<\/strong> leading the way with the <strong>Astron<\/strong>, the Swiss watchmaking industry partially converted to this technology, in an attempt to survive. However, if we had to highlight a quartz watch\u2019s flaws, two were on top of the list at the time: a battery\u2019s short lifecycle and a poor environment-friendly\u00a0recycling process. Back then, <strong>Citizen<\/strong> watches began to explore sunlight-operated devices, envisioning the design of a battery change-free watch.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"citizen-quartz-crystron-solar-cell-1976\" src=\"\/media\/CACHE\/images\/uploads\/citizen-quartz-crystron-solar-cell-1976.c19cad55ba0e.jpeg\" alt=\"citizen-quartz-crystron-solar-cell-1976\">It was <strong>1976<\/strong> when <strong>Citizen<\/strong> launched the first sunlight-powered analog watch, the <strong>Citizen Quartz Crystron Solar Cell<\/strong>, the precursor of all things <strong>Citizen Eco<\/strong>\u2013<strong>Drive<\/strong>. That watch is a milestone of either analog and digital watchmaking and, from a collector\u2019s perspective, is something you can buy at a rather affordable price too on the vintage second-hand market. Here is a listing on <strong>eBay<\/strong>: <span style=\"color: null;\"><strong>Citizen Quartz Crystron Solar Cell<\/strong><\/span>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"citizen-eco-drive-how-it-works-and-how-it-has-evolved-over-the-years\"><a name=\"Citizen%20Eco-Drive:%20how%20it%20works%20and%20how%20it%20has%20evolved%20over%20the%20years.\"><\/a>Citizen Eco-Drive: how it works and how it has evolved over the years.<\/h2>\n\n\n\n<p>From that moment onwards, <strong>Citizen<\/strong> has painstakingly improved the <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> technology to increase power reserve, reliability and, what\u2019s also important, make sure any <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> equipped watch might be capable of charging itself under any source of light, dim light included.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"citizen-eco-drive-movement\" src=\"\/media\/CACHE\/images\/uploads\/citizen-eco-drive-movement.56706e6c1d35.jpg\" alt=\"citizen-eco-drive-movement\">Engineers kept improving and miniaturizing the solar panels. They can capture the smallest light source nowadays, thus extending the maximum power reserve to a <strong>six<\/strong>\u2013<strong>month<\/strong> <strong>total battery power<\/strong> when fully charged, and up to an outrageous <strong>seven years<\/strong> on radio-controlled models. Please consider that a <strong>2000 Citizen Eco-Drive AP0440-14F Diver<\/strong>\u2018<strong>s 200m<\/strong>, like the one pictured below, had a <strong>power reserve of three months<\/strong> (photo source: <em>Francis Flinch \u2013 Own work, Public Domain, https:\/\/commons.wikimedia.org\/w\/index.php?curid=3704420<\/em>)..<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"citizen-promaster-eco-drive-AP0440-14F-divers-200m-on-a-4-ring-NATO-style-strap\" src=\"\/media\/CACHE\/images\/uploads\/citizen-promaster-eco-drive-AP0440-14F-divers-200m-on-a-4-ring-NATO-style-strap.954106db2d7a.JPG\" alt=\"citizen-promaster-eco-drive-AP0440-14F-divers-200m-on-a-4-ring-NATO-style-strap\">In <strong>2016<\/strong>, the <strong>Citizen Eco<\/strong>\u2013<strong>Drive<\/strong> technology celebrated its <strong>40<\/strong><sup>th<\/sup> <strong>anniversary<\/strong>, and the Japanese watchmaker marked this achievement by introducing the remarkable <strong>Citizen Eco<\/strong>\u2013<strong>Drive One<\/strong>, the pinnacle of the <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> technology, showcasing a <strong>2<\/strong>.<strong>98mm<\/strong> thick case that has a <strong>1mm<\/strong> thick movement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-is-it-called-citizen-eco-drive\"><a name=\"Why%20is%20it%20called%20Citizen%20Eco-Drive?\"><\/a>Why is it called Citizen Eco-Drive?<\/h2>\n\n\n\n<p><strong>Citizen<\/strong> opted for a brand name that is synonymous with a virtually unstoppable run along with eco-friendliness; no batteries had ever to be replaced, the only existing being those that store the energy converted from light. An <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> was the first watch ever to comply with the <strong>Eco Mark<\/strong> certification, introduced by the <strong>Japanese Environment Association<\/strong> (JEA); in <strong>2014 Citizen<\/strong> was the first watch manufacturer to win the <strong>JEA<\/strong>\u2018s <strong>Eco Mark Gold Award<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2019-a-citizen-eco-drive-is-the-most-precise-wristwatch-ever-made\"><a name=\"2019:%20a%20Citizen%20Eco-Drive%20is%20the%20most%20precise%20wristwatch%20ever%20made.\"><\/a>2019: a Citizen Eco-Drive is the most precise wristwatch ever made.<\/h2>\n\n\n\n<p>At <strong>Baselworld 2019<\/strong>, <strong>Citizen<\/strong> unveiled a timepiece that, by combining the <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> technology with multiple cutting-edge innovations, ensures a +\/- one second per year accuracy, the <strong>Citizen Caliber 0100<\/strong>, a micro-engineering masterpiece. Among the <strong>Caliber 0100<\/strong>\u2018s main features, I would highlight quartz crystals that oscillate at an <strong>8<\/strong>.<strong>4<\/strong><strong>MHz<\/strong> frequency, for example.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"citizen-caliber-0100\" src=\"\/media\/CACHE\/images\/uploads\/citizen-caliber-0100.e454b258d919.jpg\" alt=\"citizen-caliber-0100\">We\u2019ll discuss that in a separate hands-on review. Little known to the audience is that the <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> system also powers an entirely new watch, the <strong>Citizen <\/strong><strong>Riiver<\/strong>, a connected watch that offers advanced services by connecting with your smartphone via a dedicated App. You can find more information about the upcoming <strong>Citizen Eco-Drive Riiver<\/strong> by clicking on here: <a href=\"https:\/\/www.citizenwatch-global.com\/riiiver\/index.html\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\"><strong>Citizen Riiver<\/strong><\/span><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"our-citizen-eco-drive-top-rated-watch-list\"><a name=\"Our%20Citizen%20Eco-Drive%20top-rated%20watch%20list.\"><\/a>Our Citizen Eco-Drive top-rated watch list.<\/h2>\n\n\n\n<p>Since <strong>2013<\/strong> we have reviewed several <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> watches; almost all of them still belong to my personal collection. They are mainly top-of-the-range products belonging to the <strong>Citizen Promaster<\/strong> collection, that I consider the most iconic, and are part of the <strong>Altichron<\/strong> and <strong>Aqualand<\/strong> range, especially.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-citizen-eco-drive-promaster-altichron-cirrus-bn5048-01e\"><a name=\"The%20Citizen%20Eco%20Drive%20Promaster%20Altichron%20Cirrus%20BN5048-01E.\"><\/a>The Citizen Eco Drive Promaster Altichron Cirrus BN5048-01E.<\/h2>\n\n\n\n<p>The <strong>Citizen <\/strong><strong>Promaster Altichron Cirrus BN5048<\/strong>\u2013<strong>01E<\/strong> is an unusually elaborate limited edition six-hand wristwatch with a multi-layered dial, revealed in <strong>2013<\/strong>. Its distinctive feature was and still is a design language like nothing else seen before on any complicated watch from the brand.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"Citizen-Promaster-Altichron-Cirrus-BN4034-01E\" src=\"\/media\/CACHE\/images\/uploads\/2014\/06\/Citizen-Promaster-Altichron-Cirrus-BN4034-01E-EVIDENZA-2.79330cd8ceeb.jpg\" alt=\"Citizen-Promaster-Altichron-Cirrus-BN4034-01E\">Featuring an <strong>altimeter<\/strong> and a <strong>compass<\/strong>, the <strong>Cirrus<\/strong> showcases a full analog display, replacing the <strong>Citizen<\/strong>\u2018s signature analog-digital mixed\u00a0display. The retail price exceeded \u20ac<strong>2<\/strong>,<strong>000<\/strong> and has not plummeted over the years, confirming its icon-ready status. We briefly reviewed it on here: <a href=\"https:\/\/www.horbiter.com\/en\/citizen-promaster-altichron-cirrus\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\"><strong>Citizen Eco<\/strong>\u2013<strong>Drive Promaster Altichron Cirrus BN5048<\/strong>\u2013<strong>01E<\/strong><\/span><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-citizen-eco-drive-promaster-titanium-altichron-bn4021-02e\"><a name=\"The%20Citizen%20Eco-Drive%20Promaster%20Titanium%20Altichron%20BN4021-02E.\"><\/a>The Citizen Eco-Drive Promaster Titanium Altichron BN4021-02E.<\/h2>\n\n\n\n<p>That same year <strong>Citizen<\/strong> also introduced the non-limited edition <strong>Citizen <\/strong><strong>Promaster Titanium BN4021<\/strong>\u2013<strong>02E<\/strong>. It shares the <strong>Cirrus<\/strong>\u2018 base architecture, and a less unusual yet avant-garde style in comparison to other complicated <strong>Citizen<\/strong>, a direction the brand has unexpectedly abandoned, as they considered this as an experiment, thus losing their opportunity to stand out as design trendsetters,\u00a0in my opinion.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"Citizen-Promaster-Altichron-titanium-BN4021-02E-due\" src=\"\/media\/CACHE\/images\/uploads\/Citizen-Promaster-Altichron-titanium-BN4021-02E-due.1d83c94e6003.JPG\" alt=\"Citizen-Promaster-Altichron-titanium-BN4021-02E-due\">Featuring a <strong>SuperTitanium<\/strong>\u00ae case it has, unlike the <strong>Altchron Cirrus<\/strong>, a flat crystal, and a super-soft rubber strap. This <strong>Altichron<\/strong>, as the <strong>Cirrus<\/strong>, has faced no depreciation so far. We talked about it here: <a href=\"https:\/\/www.horbiter.com\/en\/the-2013-citizen-promaster-altichron\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\"><strong>Citizen <\/strong><strong>Promaster Titanium BN4021<\/strong>\u2013<strong>02E<\/strong><\/span><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-citizen-eco-drive-promaster-aqualand-depth-meter-bn2024-05e\"><a name=\"The%20Citizen%20Eco-Drive%20Promaster%20Aqualand%20Depth%20Meter%20BN2024-05E.\"><\/a>The Citizen Eco-Drive Promaster Aqualand Depth Meter BN2024-05E.<\/h2>\n\n\n\n<p>Alongside the new <strong>Altichron<\/strong> collection introduced at <strong>Baselworld 2013<\/strong>, <strong>Citizen<\/strong> enlarged the <strong>Aqualand<\/strong> collection the following year by launching the <strong>Promaster Aqualand Depth Meter BN2024<\/strong>\u2013<strong>05E<\/strong> in <strong>2014<\/strong>.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"CITIZEN-Promaster-Aqualand-Depth-Meter-BN2024-05E\" src=\"\/media\/CACHE\/images\/uploads\/CITIZEN-Promaster-Aqualand-Depth-Meter-BN2024-05E.0f1c14bdfd82.jpg\" alt=\"CITIZEN-Promaster-Aqualand-Depth-Meter-BN2024-05E\">The <strong>Citizen <\/strong><strong>Promaster Aqualand Depth Meter BN2024<\/strong>\u2013<strong>05E<\/strong> is a sturdy <strong>ISO 6425<\/strong> certified\u00a0professional diving watch, with a thick rubber strap. You can access our review, and one of our widest read ones ever, by clicking here: <a href=\"https:\/\/www.horbiter.com\/en\/the-citizen-promaster-aqualand-depth-meter-2014-live\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\"><strong>Citizen <\/strong><strong>Promaster Aqualand Depth Meter BN2024<\/strong>\u2013<strong>05E<\/strong><\/span><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-citizen-promaster-eco-drive-professional-diver-1000-bn7020-09e\"><a name=\"The%20Citizen%20Promaster%20Eco-Drive%20Professional%20Diver%201000%20BN7020-09E.\"><\/a>The Citizen Promaster Eco-Drive Professional Diver 1000 BN7020-09E.<\/h2>\n\n\n\n<p>At <strong>Baselworld 2017<\/strong>, <strong>Citizen<\/strong> introduced the gigantic <strong>Promaster <\/strong><strong>Professional Diver 1000 BN7020<\/strong>\u2013<strong>09E<\/strong>, the successor to its celebrated <strong>Autozilla<\/strong>, and a super professional divers\u2019 watch crafted in titanium. It was the first professional divers\u2019 watch from <strong>Citizen<\/strong> to combine an <strong>up<\/strong>\u2013<strong>to<\/strong>\u2013<strong>1000m<\/strong> water resistance with an <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> movement.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"Citizen-Promaster-Eco-Drive-Professional-Diver-1000m-bn7020-09e\" src=\"\/media\/CACHE\/images\/uploads\/Citizen-Promaster-Eco-Drive-Professional-Diver-1000m-bn7020-09e.a170c5912fb0.jpg\" alt=\"Citizen-Promaster-Eco-Drive-Professional-Diver-1000m-bn7020-09e\">I can\u2019t forget how big this tool watch was (the package comes with a strap extension, also), its exquisite build quality and the rotating bezel equipped with a locking-unlocking device to avoid unwanted rotation while diving. I strongly suggest not to miss review and photos; I think they list among the most attractive we have ever taken: <a href=\"https:\/\/www.horbiter.com\/en\/citizen-promaster-eco-drive-professional-diver-1000-bn7020-09e-watch-hands-on\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\"><strong>Citizen Promaster <\/strong><strong>Professional Diver 1000 BN7020<\/strong>\u2013<strong>09E<\/strong><\/span><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-citizen-promaster-eco-drive-aqualand-bn2037-11e-30th-anniversary\"><a name=\"The%20Citizen%20Promaster%20Eco-Drive%20Aqualand%20BN2037-11E%2030th%20Anniversary.\"><\/a>The Citizen Promaster Eco-Drive Aqualand BN2037-11E 30<sup>th<\/sup> Anniversary.<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/www.horbiter.com\/en\/citizen-promaster-watches-anniversary-2019\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\"><strong>Citizen Promaster<\/strong> <strong>collection celebrated its thirty anniversary in 2019<\/strong><\/span><\/a>, and no wonder <strong>Citizen<\/strong> released some cool limited series belonging to the three thematic sections of the <strong>Promaster<\/strong> family: <strong>Sea<\/strong>, <strong>Land<\/strong>, and <strong>Sky<\/strong>. A new <strong>Citizen Promaster Aqualand<\/strong> came last year and has in <strong>2019<\/strong> appeared as a limited edition too.<\/p>\n\n\n\n<p><img decoding=\"async\" style=\"width: 100%;\" title=\"citizen-promaster-eco-drive-aqualand-BN2037-11E-tre\" src=\"\/media\/CACHE\/images\/uploads\/citizen-promaster-eco-drive-aqualand-BN2037-11E-tre.f47bf850b0b4.jpg\" alt=\"citizen-promaster-eco-drive-aqualand-BN2037-11E-tre\">The new <strong>Aqualand<\/strong> combines an original <strong>Aqualand<\/strong> inspired design to, again, an <strong>Eco<\/strong>\u2013<strong>Drive<\/strong> movement that replaced the original quartz caliber. Please find review, price, and opinions here: <strong>Citizen Promaster <\/strong><strong>Aqualand BN2037<\/strong>\u2013<strong>11E<\/strong> <strong>30<\/strong><sup>th<\/sup> <strong>Anniversary<\/strong>.:\u00a0<a href=\"https:\/\/www.horbiter.com\/citizen-promaster-eco-drive-aqualand-bn2037-11e-thirty-anniversary-recensioni-orologi\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\"><strong>Citizen Promaster Aqualand BN2037-11E 30<sup>th<\/sup> Anniversary<\/strong><\/span><\/a>.<\/p>\n\n\n\n<p>(Photo credit: Horbiter\u00ae, Citizen Watch)<\/p>\n\n\n\n<p class=\"has-text-align-right\">Gaetano C @Horbiter\u00ae<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Citizen Eco\u2013Drive is a proprietary technology that sets Citizen watches apart from the competition. It is a pillar of the Japanese watchmaker\u2019s offering, that also includes mechanical low-end or high-end timepieces, marketed under the brand The Citizen, a direct competitor to Grand Seiko, exclusively available on the Japanese domestic market. Let me here briefly introduce [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.horbiter.com\/en\/citizen-eco-drive\/\">Read More&#8230;<span class=\"screen-reader-text\"> from The Citizen Eco Drive: history, models and features<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":15945,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[538,579],"tags":[],"class_list":["post-26441","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-citizen","category-japanese-watches"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The Citizen Eco Drive: history, models and features<\/title>\n<meta name=\"description\" content=\"We take a look at the Citizen Eco Drive technology, how it works, the evolution, and the most remarkable models using the Eco Drive system\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.horbiter.com\/en\/citizen-eco-drive\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Citizen Eco Drive\" \/>\n<meta property=\"og:description\" content=\"We take a look at the Citizen Eco Drive technology, how it works, the evolution, and the most remarkable models using the Eco Drive system\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.horbiter.com\/en\/citizen-eco-drive\/\" \/>\n<meta property=\"og:site_name\" content=\"Horbiter \u00e8 il magazine italiano sugli orologi di lusso. 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