JVC HA-FXT208SE Hi-SPEED Twin System Headphones (Special Edition) Hi-SPEED Twin System unit" adopting Triple Magnet Structure Titanium coated diaphragm reproduces high definition sound (mid-high),"Twin Bass Port" adjust back side inner pressure reproduces tight bass sound "Acoustic tube chamber" makes driver unit reproduce high linearity all range, High density housing mixing glass fiber minimizes unnecessary vibration "Fit Support" of Elastomer for comfortable fitting . Spiral Dot earpiece for clear sound Gold colour braided silver coated OFC cable. Carrying case & cord clip included