Compatible with all in-vehicle audio/video applications using wireless IR. Dual-source with adjustable headband. Wired or wireless dual operation capability. Opaque styling IR-transparent ABS plastic housing. Receivers with 270-degree capture of IR signal within 10 ft. Closed ear foam-padded earpieces for superior comfort sound isolation and noise cancellation. On/Off button with red LED status light. Auto off. A/B source selector switch for dual IR. Channel A: 2.8 MHz (R) 2.3 MHz (L). Channel B: 3.8 MHz (R) 3.2 MHz (L). Frequency response: 30 Hz 20 kHz. Impedance: 32.