Forget the Apple Watch Ultra 3, this E Ink smartwatch offers 400 days of juice to obliterate its battery rivals
The LightInk smartwatch offers an impressive 400 days of battery life, significantly outperforming competitors like the Apple Watch Ultra 3. It achieves this longevity through an E Ink display and solar charging capabilities, making it ideal for users prioritizing battery efficiency. However, the watch lacks advanced features and requires users to assemble it themselves using a 3D printer.
- ▪The LightInk watch boasts 400 days of battery life on a single charge.
- ▪It utilizes an E Ink display and solar charging to maximize battery efficiency.
- ▪The watch is an open-source project, requiring users to 3D print components and assemble it themselves.
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Health & Fitness Smartwatches Forget the Apple Watch Ultra 3, this E Ink smartwatch offers 400 days of juice to obliterate its battery rivals News By Alex Blake published 19 May 2026 It keeps going and going and going and… When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. (Image credit: LightInk) Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter The LightInk watch offers 400 days of battery lifeIt does this by stripping back features and using an E Ink displayIt also adds solar charging to stay topped up on the goFrom the Apple Watch Ultra 3 to the Google Pixel Watch 4, customers looking…
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