What is a solar watch?

Solar watches use solar energy to operate the movement.

The drive energy obtained in this way is stored in a battery to ensure that the clock works even in phases without light. This mechanism is known as the dark power reserve.

These watches do not require a battery.

A further development of solar technology can be found in the Eco-Drive watches from the Citizen brand. These clocks convert any type of light into energy. On the page "What is an Eco-Drive watch" you will find information on this topic that is worth reading.