Three minutes. But if one were to listen to music ONLY for the midrange, the HD 600 would win. too snug for comfort. look good and keep her feet warm. Maybe with enough time and give, they would have fit well enough, but given the two right shoes thing, I never got the chance to find out. Any who, I didn?t want to go through the exchange process from the recent purchase, so I looked up the material and found this one, so I said let me give it another try after ordering one on amazon that didn?t meet my expectations! Battery life is good with no hassle charging. Its a bright true white. I use this for lower back support,, not weight loss. The quality of the construction was more consistent when they were made in the US.