How much battery will be gone in 2 hours?

[iMore Question]

I'm going to Philly and I want to see if all the battery will be drained on the time I go or if I will have enough battery to play it both ways. I'm only listening to music on it.

 

[Smply_Rckless]

Which device ?


Tapatalk'n On The IPhone 6 Plus 