Very easy to use. Just pop an AA battery inside, and it'll last weeks without needing a change.
I found this mic to be a little too sensitive when recording outside and you wish to avoid parasite sounds. I didn't find it as directional as I wanted it to be, but it didn't stop me from getting the results I wanted from it.
It sounds clean as hell for inside scenes and it captures transients perfectly. I'd buy it all over again and would recommend it if you need to work on a film project.
Again, a great product from Rode.