I use mine all the time I love being able to watch tv on my phone for me its perfect no slow down or anything and now with Rev A its an great picture and over 30fps, I also have 2 batteries, from a full change just a guess I would say you could watch for maybe 40mins more or less non stop. The quality all depends on the speed of the connection. Two batteries are a must if you are going to go this route of you will find yourself with almost no talk time.