Okay.
And we of course have the traditional uh solar power , which is just uh uh uh uh uh a piece of material on the remote control which transfers light energy into electricity.  The user interface controls , um of course we have the push-buttons and uh we also have scroll-wheels. And these scroll-wheels can also be integrated with buttons. So it's just like a mouse. You can scroll 'em , you can also push it. Um  uh in the indicators we have the L_C_D_ displays , which means uh you can watch uh in a display w which channel you have chosen or something like that of the li amount of volume which is uh currently
Mm-hmm.
uh and we also have double scroll-buttons , which are just two of these things. So we don't really have the the kind of button we had in mind in our uh uh in our last meeting , the the thing with the the round with the four