Unilateral Cord. Built-in microphone & remote Control. Ideal for telecommuting, for online educational courses or listening to music, videos, etc. Lightweight and comfortable. Soft ear pads. Convenient remote-control button lets you play, stop or skip tracks, as well as answer phone calls. The swivel, fold-flat design makes the headset compact and easy to store in your bag when traveling. Compatible with iPhone. Transducer: 30.6 mm Neodymium magnet. 10-26,000 Hz. 32 ohms. 1.2 m cord. Sold by each. Black.