Small Area Stereo IR System, 3.5 mm jack for optional earphone/headphone, 2.3 MHz/2.8 MHz MSRP: $189.00 The WIR 237 system is ideal for TV or music listening, meetings, offices, or other small group listening applications. For stereo operation, the WIR 237 system can connect directly to your TV, VCR, or DVD equipped with standard audio output jacks. The WIR 237 system features the versatile WIR RX237 receiver; with a 3.5mm jack. The listener can plug in a variety of stereo or mono earphone, headphone, or neckloop accessories. The receiver´s on/off switch is conveniently built into the jack of the unit.