Diameter : 50mm with Neodymium MagnetsFrequency Range : 20 - 20KHzImpedance : 32 ohm + - 5Sensitivity (@1 KHz) : 112 dBInput power : 55mw (Max)Microphone Specifications:Mic impedance : < 2.2K ohmSensitivity (@1 KHz) : -42 + - 3dbLength : 13cm7.1 Surround SoundHigh Sensitivity MicrophoneAdjusable HeadbandInput Power : 55mw (max)Ultra-Durable KelvarTM Reinforced CableOval Ear Cushions: Designed for Full Ear CoveragePerfect for Long Wearing ComfortConnector Type : USB DigitalQS requirement: Win XP/ WIn7/WIn8/Win10Cable Length : 2.2m..