Etymotic ER3 SE/XR Noise-Isolating Earphones Model:ER3XR Extended Response making it possible to experience

making it possible to experience a natural way of hearing sound

Battery: 2x Rechargeable custom Enix Energies 3

and enjoy your music anytime

Pure Silver Premium Litz Cable

4mm connector opens a pathway to a newer generation of balanced output devices (headphone amplifiers

Etymotic ER3 SE/XR Noise-Isolating Earphones Model:ER3XR Extended Response making it possible to experienceER3SE XR Earphones Quick Overview In ear Invented here: The ER3SE Studio Edition provides a high level of sensitivity, making it a perfect match for the portable media players on the market today. The ER3SE offers audio professional grade sound reproduction at an affordable price. The ER3XR Extended Response offers a modest bass boost, building on the sound quality of the ER3SE, while providing a slight bass boost for those listeners that prefer a