Lightweight Ear Hook Boom Microphone Headset with large PTT for two way radio. With in-line PTT that come with volume control and VOX/PTT switch. The VOX mode work with two way radio that have VOX capability. (Note: Some two way radio required a powered standalone VOX box to operate VOX mode.) XBM530B provide multiple type of remote PTT extension options (sold separately). Handle Bar PTT SKU: XRPT-HB and Finger PTT SKU: XRPT-FG COMPATIBLE: TriSquare (1-pin) TriSquare eXRS (eXtreme Radio Service) TSX-100, TSX-100R, TSX-300, TSX-300R
