Memory wire that conforms to the ear for a locked-in fit Inline microphone, remote, and universal volume control for headset use Sound separating in-ear design helps you focus Modular cable system for ease of use Includes sports armband, zipper bring case, and 6 pairs of ear suggestions Energetic noise with enhanced bass keeps you inspired Sits flush in the ear, fitting under many helmets and reducing wind sound Improved sweat resistance for enhanced toughness