1. The concealed sound tube transmits clearer sound. 2. Large PTT, wearing gloves will not affect key operation. 3. A remote microphone with a push-to-talk button, you can edit anywhere. 4. The hidden microphone is located on the side of the PTT switch. 5. The plastic earplugs fit snugly against the ear canal. 6. The transparent tube SPK has excellent concealment, making communication more private. 7. Two-pin standard diameter: 3.5mm stereo ear (thimble). Microphone 2.5 mm stereo (bottom pin) 8. The distance between two needles: 11mm 9. Weight: 55 grams 10. Suitable for Kenwood KPG KPG27D, KPG29D, KPG48D, KPG49, KPG55D, KPG56D, KPG62D, suitable for RETEVIS H-777, RT-5R, RT-5RV, RT-B6, suitable for Kenwood TK TK-250/350/353 , TK-260/360, TK-260G/360G, TK-270/370, etc.
