Etymotic Research ER4XR with Etymotion Wireless Bluetooth Cable, Black

* High performance balanced armature drivers are precision matched to within 1 dB * Specially designed for uncompromising accuracy in the mid to high frequencies with a bit of extra presence in the lower end * Built in functionality to answer calls, play/pause, and change tracks * 35-42 dB of noise isolation with a max output of 122 dB * Included Components: Earphones, Bluetooth Cable, Eartips