You know it's taken me ages thinking of this as most outdated things have usually been replaced by bigger and better things but I had a proper solar powered watch back in the early 1980's that was light years ahead of its time.
When I say proper solar powered I mean the solar panel didn't just supplement the battery it actually recharged it.
It was a fabulous looking design that was so far ahead of it's time it would still look modern today and even had a quartz panel instead of normal glass.
When the battery eventually went I remember chatting to an old watchmaker who told me that these fully rechargeable watches were extremely rare to start with and almost non-existent at that stage.
They didn't even make a rechargeable battery for it anymore and I had to go with a non-rechargeable one.
Seems bizarre that I had something so eco friendly back then and that still isn't commonplace now.