One of those concepts that seems silly at first glance, but I could leave one of these on the window sill for a few months and not worry about flat batteries the first time I cycled in the dark after summer.
Technorati tag: Solar Power
One of those concepts that seems silly at first glance, but I could leave one of these on the window sill for a few months and not worry about flat batteries the first time I cycled in the dark after summer.
Technorati tag: Solar Power