Philips SHN9500 Noise Canceling Headphone. Headphone frequency: 20 - 22 Hz, Headphone sensitivity: 102 dB, Impedance: 32 Ohm. Headphone connectivity: 3.5 mm, Connector(s): 3.5 - 6.3 mm mono, Cable length: 1.2 m. Battery type: Yes, 1.5V Battery R03/AAA. Packaging type: Carton. Airplane plug: Yes, 2 * 3.5 mm, Pouch: Protective pouch included, Cables included: Detachable Cable