Also Fits: KNG-P150, KNG-P400, KNG-P500, KNG-P800, KNG2-P150, KNG2-P400, KNG2-P500, KNG2-P800. Features: 4.5 mm cable, rotating clip, emergency button, high / low volume control, 103 dB audio level, IP68 rated, 3.5 mm port for optional listen only earpiece.