HP Premium Digital Headset. Device connectivity: Wired. Ear coupling: circumaural, Headphone frequency: 20 - 20000 Hz, Impedance: 32 Ом. Microphone frequency: 100 - 10000 Hz, Microphone sensitivity: 44 dB. Dimensions (WxDxH): 169 x 196 x 79 mm, Weight: 0.256 kg. Package dimensions (WxDxH): 226 x 288 x 89 mm, Package weight: 0.469 kg