Large 11mm neodymium driver unit that offers high power handling and sensitivity to further enhance the listening experience friction noise has been greatly reduced through the use of a 10 meter friction noise reduction cord equipped with an iphone compatible plug the silicon rubber air cushion sets a new standard for comfort in the ear bud category the soft touch cushion changes shape to conform to the contours of the wearers ear ensuring that the ear buds fit securely and comfortably the ha fx