Standard Horizon Earpiece-Microphone f-HX270, HX370, HX471 & HX400

Earpiece/MicrophoneFeatures: Single-pin Straight Includes an additional earpiece foam cover Installation: 1-Set the volume level of the transceiver to minimum Turn the transceiver OFF and then insert the SSM-55A connector into the transceiver Earpiece/Microphone jack Operation:Press the PTT button and speak into the microphoneCompatible Devices: HX270 HX370 HX471 HX400 Product : STANDARD EARPIECE MICROPHONE FOR HX270, HX370, HX471, HX400 Manufacturer : Standard Horizon Manufacturer Part No : SSM-55A UPC : 788026137824 Product : STANDARD EARPIECE MICROPHONE FOR HX270, HX370, HX471, HX400