PMLN4294 - Earbud with Combined Microphone/PTT. Requires HLN9716 Audio Adapter for use with GP328/GP338/GP329/GP339 PMLN4425 - Earset Boom Microphone With Remote Ring PTT PMLN4443 - Ear Receiver with In-Line Mic/PTT/VOX switch (MAG ONE) PMLN4444 - Earset with Boom Mic and In-Line PTT/VOX switch (MAG ONE) PMLN4445 - Ultra-Light Headset with Boom Mic And In-Line PTT/VOX Switch (MAG ONE) PMMN4008 - Remote Speaker Microphone (MAG ONE)
