Boom mic length (mm): 135 mm, Button user controls: Call answer/end; Mute; Volume +/-; ANC: off, low, high, Headphone type: On-ear (stereo), Sensitivity (speaker): 84 dB SPL (1 mW/1 cm) +/- 3 dB, Microphone type: Omnidirectional, Boom mic rotation: 280°, Ear cushions: Artificial leather (surface material), Compatible Operating Systems: Windows 10; macOS, Speaker size: 32 mm, Warranty: 02 Years, 8X223AA.