High quailty with powerful sound but stylish and lightweight, ideal for iPods or MP3 players or any device with a 3.5mm plug. Key Features: – High quality with powerful Sound. – Driver units: 40mm. – Frequency response: 15Hz to 20KHz. – Impedance: 32ohm. – Sensitivity: 113dB +- 3dB. – Ideal for iPod/MP3 or any device with 3.5mm plug. – Stylish & Lightweight. – Cord length 1.2m. – Manufacturers Guarantee.