The black version of the SONY MDR-ZX110 Stereo Headphones utilize 30 mm dynamic dome drivers with PET diaphragms in a closed-back supra-aural on-ear design to deliver an extended low frequency response of 12 Hz to 22,000 Hz with a sensitivity of 98 dB/mW into a 24 ohm load. for improved portability, the earcups can swivel flat and fold up into a more compact form factor. A flat Y-type cable design helps prevent tangles and terminates in an L-shaped stereo mini plug.. 30 mm drivers for rich, full frequency response. Lightweight and comfortable on-ear design. Swivel-design for portability. 47-1/4 in. (1.2 m) tangle-free, Y-type cord. <a href=https://www.homedepot.com/c/electronics_recycling_programs style=color:#F96302 target=_blank>Click here for more information on Electronic Recycling Programs</a>. Headphone Style: Over The Head