iFrogz IF-AUR-BLK Aura Premium Open Air Headphones, Black Anti-vibration aluminum components Ultra-comfortable headband and cushions Travel-friendly rotational ear cups In-line 3 button mic/remote Driver Unit: 40 mm neodymium/Impedance: 32 ohms/Sensitivity: 112 dB +/- 5 dB at 1 kHz/Frequency Response: 20 Hz to 20 kHz/Cord Length: 1.2 m