Wireless headphone for nano,No batteries required,Hi-Fi stereo sound quality,computer headphone,mp3 headphone Wireless Headphone for nanocomputer headphonemp3 headphoneNo batteries requiredJust slide your Mp3 player into the slot on the ear cupSoft full sized ear cups comfortably surround your earsAdjustable headband fits snugly over your headComplete access to your Mp3 controls