vectrix ( sound system ) ......

hi all well i have just been to the boot sale and bought a wind up radio £1 and its solar powerd aswell i have two others aswell much biger ons but .
this radio is much more powerfull i/e the man must of given it a good wind as he said it would last for one hour
yep you guessd it . its still on full power after 10 hours when is it gonna need charging up ????? well all the do is wind the radio up and shove it in the glove box with all the tinny gapes round the glove box you can hear the sterio while riding great shame the vectrix won't go for this long .and still working