My brother has the Logitech FreePulse Wireless Headphones and I oten borrow them my on personal use. They are awesome headphones and revolutionary for the sound/ audio equipment market. they are awesome as they project the sound wirelessly, you simply plug the transmitter into your ipod, or whatever media device you want to listen to and it projects the sound to your headphones. Although this is a revolutionary inprovement, the only disadvantage is that the wireless transmitter that you have to plug into your device, is quite big for a transmitter. The headphones are good for activities such as running, as they clip onto your ears and sit around the back of your head. Personally I don't like this type of headphone as I find them quite uncomfortable, as they hurt my ears after wearing them for a long period of time. For those who like this type of headphone thease are brilliant and perfect for anyone who like to exercise, although they are relatively expensive.