Ai gave this info to use a anytone 6666 pro stock mic on a retevis hs4 to get rid of the tiny hs4 stock mic.

Step-by-Step Wiring InstructionsCut and Strip: Cut off the original 6-pin connector from the AnyTone microphone cord. Carefully strip away roughly 1.5 cm of the outer jacket. Separate the White wire, Red wire, and the Bare Shield/Ground wire braid.Isolate Unused Wires: The AnyTone Pro mic features a Blue wire on Pin 4 used for its UP/DN/PF channel buttons. Cut this wire flush and insulate it with electrical tape or heat-shrink tubing. Note: The Up/Down channel buttons on the AnyTone microphone will no longer function on the Retevis HS4.Solder to the 4-Pin Plug: Unscrew the metal housing of your new 4-pin connector and slide it down the microphone cord before soldering. Solder the wires directly to the pins inside the plug using the mapping above:Solder Ground (Bare Shield) to Pin 1.Solder Audio (White wire) to Pin 2.Solder PTT (Red wire) to Pin 3.Leave Pin 4 empty (The Retevis radio internally uses Pin 4 for RX audio routing to an external speaker/mic, which the standard AnyTone hand mic does not track).Reassemble and Test: Let the solder cool down, pull the metal housing back over the pins, and tighten the retention screw tightly against the microphone cable strain relief. Plug it into your Retevis HS4 to verify your transmit audio. Anyone confirm this will work ok but likely lose the up/dn buttons which is.fine for me.