HQ54 WIRED GAMING HEADSET: FANTECH MARS II Dimensions Microphone: 6 x 5 mm Microphone Sensitivity: -38±2dB Directionality Omnidirectional microphone 40mm is the speaker's diameter. Speaker Sensitivity: 121 dB Impendance Presenter: 32 ± 15% Diameter of Plug: 3.5 mm Compatibility across multiple platforms for the FANTECH MARS II HQ54 wired gaming headset You can play anywhere! There is only one plug when using 3.5mm JACK TRRS, but it already has two functions (audio and microphone). For those of you who enjoy playing mobile games and can plug straight in, this HQ54 is ideal. Furthermore, this HQ54 is compatible with PC, XBOX, and PS.