The wired headphone are obviously plug and listen, but the wireless model is rather unique. There is a stylish wirelesss transmitter that can be plugged into your PMP and it will broadcast at 2.4 GHz frequency. Also, this transmitter can be synced to 4 pairs of headphones.
One the left earcup, you can find a power button, bass boost, and various playback controls. The bottom of the headphones houses a microUSB port for charging.