Sennheiser HD599 Open Back Around-Ear 3. 5mm & 6.35mm Headphones - Ivory
High-Quality around-ear open back headphones. Colour: Ivory & Mocha. (Note) This model has: No noise cancelling function. Impedance; 50ohms. Frequency response; 12- 38,500 Hz. Earpads are replaceable also.