They will never work 100% of the time, but they are comfortably working at 99% of the time for me now. If I had any complaints it would be 2 things. It has more than enough volume to hear myself clearly over a full live rock band, and enough headroom to eliminate distortion. Perfect size, easy to install and timeless looking But cant send it back under the 90 day warrantee as amazon turns off the return button, and I do not have contact information to the seller. Like I?m the others mine arrive scratched and they looked like they?d been worn! I followed other reviews and went down to a 7 and they couldn?t fit more perfect! The other thing is that the Bluetooth doesnt go through the walls very well. Holmes, however, is left with too many baffling clues and a narrowing field of suspects. Great sweatshirt .