Impedance: 32 ohm, Button user controls: Call answer/end; Mute; Volume +/-; Microsoft Teams, Headphone type: On-ear (monoaural), Ear cushions: Artificial leather (surface material), Compatible Operating Systems: Windows 10; macOS, Minimum System Requirements: USB Type-C port; 3.5 mm audio, Warranty: 02 Years, 76J15AA.