Connectivity technologyWirelessUSB connectivityUSB connectorUSB Type-ABluetoothWireless range 100 mHeadphonesEar couplingSupraauralHeadphone frequency50 – 18000 HzImpedance90 OMicrophoneMicrophone frequency150 – 6800 HzBatteryBattery life (max)10 hStandby time 60 hSystem requirementsWindows operating systems supportedMac compatibilityOther featuresDECT connectable RJ-9 connector RJ-11 connector Sound pressure level (max) 118 dB