The JVC HA-L50B is a lightweight and foldable pair of stereo headphone. It offers simple and stylish design suitable for a digital audio player. phone, tablet, etc with a 3.5mm connection.It offers high quality sound with 30mm driver unit, and it has a 1.5 metre (4.9ft) cord for added convenience. Specifications Colour: Black Foldable stereo headphones Sensitivity: 104db/mW Nominal impedance: 32 ohms Frequency response: 18-22,000Hz 30mm diameter diaphragm 3.5mm connecton for phones, tablets, etc 1.5 metre (4.9ft) cordWhat's included JVC Lightweight Headphones - Black(Cable attached)