Enjoy deep and powerful bass along with good clarity and a spacious presentation, extreme comfort, and the convenience of a single cable and folding headband. The supra-aural design (ear cups rest on your ears) uses ear cups that swivel to fit the shape of your head/ears and a padded, lightweight, adjustable headband that is comfortable for long term wear. The cable is designed without a split, connecting only to the left ear cup, eliminating cable tangle and frustration. Sound leakage is reduced due to the closed back design of the ear cups, so you won"t disturb your neighbors like an open backed headphone. Travel with a headphone has never been easier, as the headband folds and the ear cups swivel into a compact size perfect for storage and travel during those rare occasions you will not be listening to the HT-21.* Spacious, clear sound with deep and enhanced bass* Closed back design offers isolation and keeps the sound from disturbing your neighbors * Headband is adjustable to fit different sized heads* Ear cups swivel for comfort* Single cable (on the left ear cup) eliminates tangling* Ear cups fold in flat and into the headband for easy storage* Soft pouch included for storage and transport when not in use * Driver: 40 mm dynamic drivers* Headband: Lightweight, padded and fold-able with swivel ear cups* Frequency Response: 20Hz – 20KHz * Sensitivity: 114 dB* Impedance: 32 ohms* Maximum Power Input: 50 mW* Connector: 3.5mm stereo gold plated 45° plug* Cable: Single sided (left ear cup only) 120 cm cable (48 in)* Accessories: Soft lying pouch