Oh I see.
and how much you need to send the data across.
Okay.
Um , and d which leads sort of onto the next point about 'em being small and easy to carry round. Um , now the ones at the moment are small but I was just wondering if we could look at something a bit smaller.  Now the main components I came up with um were obviously the power source for the batteries 'cause otherwise it's not gonna work , uh as I said about the  w which batteries we were gonna choose , we can uh discuss that later and then you obviously need something to decode the information that you're putting in from from the controller Now these have a wireless range of up to about five metres which is sort of suitable for anyone who's watching the T_V_ unless they're in a cinema , which not most people do so as we're applying to the most audience that should be fine. And then I was uh  just had a quick look at the external design but I d I left that mostly to the uh interface designer. And so this is what I had as the basic idea of what we wanna do.