A French company (SilMach) backed by Timex Group is claiming to have opened a new chapter in watchmaking with the creation of a silicon motor that matches the accuracy of quartz-based movements with the elegance of a mechanical watch’s sweeping hands.
I wonder how long the battery lasts. However, some big watches with conventional mechanisms use standard small movements with lots of free space (I could extend the battery life by sticking 4 more SR626SW cells there) so a larger battery could be an option.