Solar watches

[summer 71]

How do u jump start a solar watch. For how many hours do i need to keep it under sunlight to fully charge it before wearing it.Thanks

 

[Sugardragon]

The manual for my Citizen Eco-drive says a one-day charge is 2 minutes in sun, 12 minutes under cloudy sun, and 40 minutes under a fluorescent light. A full charge would be 11 hours, 40 hours, and 130 hours respectively.