Deluxe Stereo Headphones for mobile devices - Closed back design - Swivelling ear-cups - 40mm (1.6" +ÿ) drivers with powerful neodymium magnets - Foldable and adjustable headband - Low impedance (30 Ohms) for excellent compatibility with mobile devices - Detachable and replaceable cord (2m x 2.2mm/ 7.21 ft x 0.09 w/ gold plated 1/8"(3.5 mm) stereo phone plugs - Frequency response: 10Hz - 20kHz - Sensitivity (SPL): 106dB - Power Handling: 50mW (max. rated) - Colour: Black or White matt - Luxury soft carrying bag, included.