Skullcandy Crusher Wireless Over-Ear HeadphoneSkullcandy Crusher Wireless Headphones gives you up to 40 Hours Battery Life. With Stereo Immersion Tech which provides a dual-sensory bass experience. The bass can be adjusted. The earband is foldable. With a built-in microphone so you can talk on your smartphone and control volume and track selection. Comes with a protective travel case. Can also be connected via the supplied cable if the battery runs out. The package contains: Crusher® Wireless HeadphoneMicro USB to USB charging cableProtective CaseBackup AUX cable with microphone and remote controlBluetooth Version 4.1