Works perfectly! Sounds awesome!! Only used for a few hours during flights. Includes User Guide. Highlights: Over-Ear Closed-Back Design Active Noise Cancellation Adjustable Padded Headband Leather Padded Ear-Cups Ear-Cups Fold Flat for Storage ControlTalk Handsfree Mic and Remote Carrying Case Features: The black Executive Over-Ear Headphones from Beats by Dr. Dre feature a closed-back, circumaural design and are equipped with active noise-cancellation technology. They offer the same audio quality as the Beats line of headphones and are additionally geared to block external sound in noisy travel environments. Active noise cancellation adjusts to your surroundings so you can listen to your music without outside interruption. This feature enables the listener to avoid loud distracting noises such as subways, planes and other sources that can cause potential hearing loss. The headphones are powered by a pair of standard AAA batteries and the on/off switch allows you to bring your Beats Executive on the plane or train for continuous listening. Use the headphones with smartphones, MP3 players, CD players, computers, and other devices. The cable has an inline mic/remote-control for hands-free use with your smartphone, music player or tablet. The brushed aluminum headphone frame and plush leather around-ear cushions provide additional noise isolation as well as comfort. Headphones are designed to fold flat for storage in a briefcase and also come with a protective hard-shell carrying case.