Communications Headset (190-0312) Features Faxback Doc. # 15163 with VOX This Radio Shack Communications Headset with VOX (Voice Activation) allows handsfree operation of your mobile or handheld communications transceiver, such as Radio Shack's HTX-202 2-Meter Transceiver (Radio Shack Cat. No. 19-1120) or HTX-404 440MHz Transceiver (Cat. No. 19-1140). You can use this communications headset with many of the Radio Shack hand-held ham, business band, GMRS, and citizens band transceivers that have external microphone/speaker jacks. The headset is also compatible with Icom, Standard, and Yaesu transceivers. The headset has these features: Voice Transmit Control (VOX) - automatically activates the transceiver so you begin transmitting when you begin speaking. Push-To-Talk Button - lets you manually switch between transmitting and receiving when the voice control feature is not appropriate. Adjustable Headband and Flexible Microphone Boom - ensures a snug, comfortable fit. Flexible, Lightweight Design - lets you wear the headset over either ear and operates on one AAA battery to keep the headset light and comfortable. Low-Power Circuitry - operates for more than 500 hours on one AAA battery. (TE/all-05/05/95)