We need our stuff to work not fail at the worst possible times. You cant beat this phone for the price. Ive taken the Cowin E7s on a flight to Europe, and the noise cancellation feature was disappointing. My son has converted me to these types of ear pieces. I bought this for my 14 year old niece for her birthday and she loves it! 25inch in diameter the ring can only accomdate one finger comfortably. I love it I have a little belly fat thats visible the dress doesnt hide it or bring attention to that area. It has the Thunderbolt female on the end that goes into the microphone, and a USB on the other that will go into your laptop or desktop computer. I wouldve much rather had fewer cables that were higher quality than the "loud" cables it comes with. Heck maybe even older.