With the Beats by Dr. Dre Studio Wireless over-ear headphones, the music on your iPhone, iPad, or iPod can truly roam free. The Bluetooth stays connected up to 30 feet away so you easily move about and keep the music going. Take calls, skip songs, and change the volume right from the headphone. Rechargeable battery lasts 12 hours while connected through Bluetooth and up to 20 hours when plugged into your iOS device; Adaptive Noise Canceling blocks out the world in two modes.