now i can say these BT headphones are perfect! you can now control the volume. and also you can adjust the volume without unlocking your iphone, by directly pushing up and down volume on the side of the iphone. the sound is more excellent compare to my old iphone 3G. i tried yesterday on gym. on pocket no drop sound, at home leaving the iphone on room closing the door still the sound is perfect! i really recommend them. i bought them at mobilecityonline $99 plus less than $5 shipping ground UPS. i am not connected or any part of mobilecityonline. i am just really impressed the way they ship and excellent customer service.