Apple could add a nostalgic feature to its Apple Watch – but with a modern twist.
The Cupertino company has received a new patent that describes a charging mechanism capable of generating electricity by manually winding the device.
The application illustrates a system that uses a rotational magnetic field to power an electric generator – and a watch is shown in the images as an example.
In traditional wind up devices, the winding is generally done by a user manually exerting a rotational force on the dial.
