Features: *Offering a powerful, bass-driven stereo sound with greater clarity and improved dynamics. *Asymmetrical cable design, the longer end can go behind the neck and into the opposite ear, thus reducing tangles and cable clutter. *The various sizes of ear adapters (S/M/L) allow for a customized fit as well as exceptional noise blocking capability. *3.5mm wired headphones is compatible with most 3.5mm audio devices. No need to worry about running out of power. *A convenient carrying pouch is included for easy storage. Specifications: Brand Name: Sennheiser Model Number: CX300II Type: In-ear Dynamic Impedance: 16ohm Sensitivity: 113dB Frequency response: 19Hz-21KHz Plug Type: 3.5mm Microphone: No Line Control: No Color: Black Cable length: 1.2m / 3.93ft Package Size: 21.5 * 9.7 * 4.0cm / 8.46 * 3.81 * 1.57in Package Weight: 91g / 3.21oz Package List: 1 * Headphones 2 * Pairs of Earcap