android broadcastreceiver vs listeners

android broadcastreceiver vs listeners

If you have a Service that frequently (every second or half a second)
sends updates, are there pros/cons to using Broadcasts vs registering
Listeners (an Interface you create) that get stored in some sort of List
in the Service and sending out updates that way?
I'm thinking in terms of memory usage, battery consumption, etc. I know
it's a little bit open ended, however, there's not much in terms of
documentation so they can be equal, but if someone knows a definite answer
or has some input, it would be appreciated.