High Compatibility; walkie talkie shoulder speaker microphone; for HD1 HD2 HA1G Retevis RT29 RT48 NR30 RB23 RT29D RT47 RT47V RT87 RT83 RT82 RB46; compatible with Motorola GP328 PLUS GP338PLUS GP344 GP388 GP644 GP688 EX500 EX600 PRO5150Elite RPV3000 RPV3600 RPU3000 RPU3600 EX600-XLS GL2000 EX560 ^^ AI Noise Reduction; radio microphone uses the third-generation MFAA chip; featuring intelligent noise reduction; voice recognition; and background noise filtration ^^ KEVLAR Cable; light weight; high strength; dimensional stability; low shrinkage; 360rotatable clip; the walkie talkie mic can be clipped to the clothes near the ear to pick up the clear sound ^^ IP54 Waterproof; shockproof; windproof; dustproof; suitable for indoor use or occasional outdoor use in a controlled environment ^^ Big PTT; walkie talkie microphone with side PTT button that transmits messages with a single press, increasing efficiency while working or outdoors