Sony Premium Lightweight Extra Bass Stereo HeadphonesThe Premium Lightweight Series Stereo Headset from Sony are Able to deliver powerful bass and clear treble sounds, the headphones have a slim, folding design which is perfect for music lovers who enjoy strong beats and grooves while on-the-go.30mm Dome-Type DriversThe 30mm driver units coupled with ferrite magnets are designed to accurately reproduce a broad, dynamic frequency range, resulting in smooth transitions in treble and mid-range frequencies with ample bass responsePressure-Relieving EarpadsThe adjustable headband with swivel ear pads is designed for comfort so you can enjoy extended listening sessions without fatigueSwivel EarcupsThe swivel and folding-style earcups stow away for compact portabilityY-Type CableThe Y-type cord design helps reduce the chance of tangles while the 4-conductor gold-plated, L-shaped plug ensures connectivityFolding design for easy portabilityThe collapsible construction and swivel earcups make it easy to stow the headphones in a backpack or bag for travel