gentle reminder: Fits directly into the earThe headset is only suitable for Midland intercom, not for Motorola, Kenwood and other other brands of intercoms. Two Transparent behind the ear Microphones. Push To Talk Option, Vox Optio Output level: 90dB, Rated input power: 0.1W, Maximum input power: 0.2W, Output impedance: 32 ohms. Compatible LXT Series: LXT80, LXT100, LXT101, LXT110, LXT112, LXT216, LXT276, LXT300, LXT303, LXT305, LXT310, LXT312, LXT315, LXT316, LXT318, LXT319, LXT324, LXT326, LXT328, LXT335, LXT340, LXT345, LXT350, LXT360, LXT365, LXT376, LXT380, LXT385, LXT410, LXT420, LXT435, LXT440, LXT460, LXT480