However, between these and the HD660s its a more difficult choice. Beautifully made, very comfortable, decent cable length. Now, in less than 30 days, the bottom piece is starting to lift. I left the outlet plate on with the center screw removed, and screwed this device into place through that hole. This was my first time buying shoes on amazon, so I was very nervous! ControlsThe Bose controls are intuitive to find and to use. I brought two headsets and both stopped working within one week. Air conditioning, fridges and freezers, a dripping tap ten feet away (3Mtrs), a car door being slammed three streets away . The sticky tape works great holding the adapter directly to the phone except where you really need it to hold. They even walked me through the process to verify a successful change to a double click interval of 1/10th second, which Im very unlikely to trigger by bumping my pocket.