70 hours battery life on one charge Simple controls enable you to easily manage calls and music Lightweight, fold-flat design for easy portability Experience pure audio clarityThe ATH-SR30BT wireless over-ear headphones deliver the exceptionally pure audio of Sound Reality in a convenient wireless design.What\'s more, the internal battery provides a remarkable 70 hours of continuous use on a full charge, so, for all practical purposes, the music never has to stop