Retevis H103K Walkie Talkie Microphone IP54 Waterproof Shoulder Speaker Mic PTT for Kenwood Baofeng for Retevis RT3S RT50 RT81 Retevis H103K Walkie Talkie Microphone IP54 Waterproof Shoulder Speaker Mic PTT for Kenwood Baofeng for Retevis RT3S RT50 RT81. Sale price : $19.43 Category : Phones & Telecommunications