<b>Product description:</b><br><br> <b>1. Noise Isolation </b><br> Comfortable on ear headphones with a great seal which minimize outside noise, ensures high-quality sound, capturing the nuances and clarity of all your favorite music. <br><br> <b>2. Enjoy rich, full frequency response</b><br> 40 mm driver units deliver full, balanced sound for a complete listening experience from 20 - 22,000 Hz. <br><br> <b>3. Tangle-free cord</b><br> The durable, 1.5 m cable resists snags and tangles so you can get caught up in your music, not your cord. <br><br> <b>4. Phone Control, Volume Control and Microphone</b> <br> The perfect smart phone companion, as headphones for enjoying music or as a headset for taking calls on the go! <br><br> <b>5. Lightweight and Foldable</b><br> Swivel ear cups, the headphones can lay flat for compact storage. This fold-flat portable design makes the headphones easy to take along or to store in your desk drawer for use at work. <br><br/> <br/> <br/><b>Specifications:</b><br> <b>Color:</b> Black<br> <b>Connector: </b>3.5mm jacket<br> <b>Cord length: </b>47-1/4-inch<br> <b>Driver diameter:</b> 40mm<br><b> Impedance:</b> 320hm?15%<br> <b>Sensitivity:</b> 101dB?15%<br><b> Frequency Response:</b> 20-20KHz<br><b>Item Weight:</b> 5.1 oz<br> <b>Item Dimension(Folded):</b> 6.3 inch x 5.1 inch x 1.57 inch