| Mobile Web

LightInk open-source smartwatch claims up to 400 days on a single charge

An open-source smartwatch project called LightInk has emerged, aiming to maximise battery life with an E-Ink display and a solar charging system. The project’s creator says it can run for up to 400 days on a single charge, even without solar charging. The watch limits features, using a low-resolution black-and-white screen and omitting most health and fitness sensors. It is not sold as a finished product and must be built by users using 3D printing, parts and self-installed software.