Listen to your music in style no wires attached! Logitech's Wireless Headphones for MP3 use advanced Bluetooth frequency-hopping technology for interference-free, crystal clear audio. Digital wireless technology provides over 30 feet of range, and rechargeable batteries can play up to eight hours per charge. These headphones include a wireless adapter that snaps onto your MP3 player, plus integrated controls so you can adjust the volume or mute tracks without ever touching your player. The power of wireless audio is in your control with Logitech's Wireless Headphones for MP3.