Headphone Driver diameter: 40mm x 7.5 mm(H). Frequency range 20 to 20,000 Hz. Impedance 32. Sensitivities 1kHz 108 dB to 4 dB. Input 100mW. Connector 3.5 mm headphone jack. Inner Ear Cup Diameter 90 mm. Cable Length 2.5m. Pick Up Pattern noise cancelling. Frequency range: 100 to 10,000 Hz. Signal to Noise Ratio 50dB. Sensitivities 1kHz: 38 dB to 3 dB. Audio Usage: Devices with 3.5mm audio jack. Audio and Microphone Usage: Devices with a 3.5mm a...