33 SMC Microphone Loudspeaker with multifunctions, volume etc. KENWOOD
KENWOOD SMC-34 Speaker Mic w/ volume control & 3 function keys Two-Way Radios - Newegg.com
Smc-34 Mic Can Adjust The Volume For Walkie Talkie Microphone Th-f6a/f7a Th-k20/40a Th-g71 Th-d72 Ham Two Way Radio Microphone - Walkie Talkie - AliExpress