I am curious as to the difference in charging rates between Casio's Tough Solar and Citizens Eco-Drive.
I quote from the Casio manual: "Keep the watch exposed to bright light. When you are not wearing the watch on your wrist position the face so it is pointed at a source of bright light. Make sure the watch is exposed to light as much as possible."
Quoting from the Citizen manual: "Citizen's unique Eco-Drive, which absorbs sunlight and any artificial light through the crystal and dial to recharge the watch continuously."
My impression after reading these two manuals, is the Eco-Drive does not require as much light as the Casio, nor does it require light that is as and intense and bright as Casio does, since it talks about charing in artificial light.
Does anyone have an Eco-Drive and if so how do you find it charges as compared to the Casio Tough Solar?