chmandaue
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Quartz watch energy quantified
After 60 years of R&D, analog quartz consumes only 1 or 2 microwatts. (vs Apple Watch 10,000 microwatts idle and dark). This is a 30 times efficiency gain.
This insane efficiency in turn allows modern solar quartz to deliver an energy surplus of about 100:1 outdoors and 5:1 in bright indoors, meaning that it only ever dies if kept inside a drawer or closet for months.
This fact has gotten the attention of the 3 Swiss majors, who all now have solar watches to offer utter convenience to those who want it.
Modern solar is a perpetually running watch that doesn’t come with a caveat of “if you wear it.”
This article sets out the history and the hard numbers. It also gives a simple method - the *Power Ratio* - to quickly compare how good the solar feature of any watch is.
Link to full article (free to read): chmandaue.substack.com
Quartz watch energy quantified
After 60 years of R&D, analog quartz consumes only 1 or 2 microwatts. (vs Apple Watch 10,000 microwatts idle and dark). This is a 30 times efficiency gain. This insane efficiency in turn allows modern solar quartz to deliver an energy surplus of about...
Original calculations are in HAQ forum
Thread links For the quartz power draw https://www.watchuseek.com/posts/57929897/ For the solar side https://www.watchuseek.com/threads/energy-of-photovoltaic-haq.5657815/post-59367397