ErgoFit design for ultimate comfort and fit</br>In ear headphone</br>10.7 driver unit</br></br>Product Description</br></br>Panasonic RP-HJE125 - Ergofit - earphones - in-ear - blue - Frequency response 10 - 24000 Hz - Manufactured by Panasonic</br><br/>http://www.amazon.com/gp/product/B00KZIQH86