Sony Lightweight Wireless Surround-Sound Walkman MP3 player Headphones Headphones, speakers, and a 16GB MP3 player in one - The powerful Sony headphones are also a personal speaker system and an MP3 player, giving you more options as to how you listen Wireless headphones - This one-piece music players unique design is lightweight, ideal for sports and active lifestyles. It allows you to be wire-free, hands-free, and without distraction whether youre working out at the gym, playing outdoors or just chilling Designed for Comfort - Pressure-relieving cushions wrap around your ears for a comfortable acoustic seal and powerful bass response Sealed Acoustic Design for Isolation - A tightly sealed acoustic design allows for a high level of sound isolation which aides in the reproduction of powerful and extended bass sound Powerful Bass - Specially designed, powerful drivers deliver deep and powerful bass that perfectly complements today's popular music genre