Retevis Covert Acoustic Tube In-ear Air Acoustic Earpiece Headset 2 Pin PTT MIC for Kenwood PUXING Baofeng UV-5R UV-5RA 888S H777 RT7 (4 Pack) Length of the cable (Plug to PTT) 135cm;Space of two-pin 11mm The transparent tube connecting the ear bud makes you look like a secret service agent or a body guard and protects your health from radio electromagnetic wave radiation Excellent for use in police military nightclubs bars paintball security restaurants hotels bouncer warehouses and noisy environments Almost All with a two pin plug and former pin diameter of 3.5 mm and 2.5 mm in diameter after pin; double pin from 8 mm within and 11 mm center distance of 2 pin If your radio model is not listed above please email us your model number before purchasing and we will help you to find the right one which is suitable for you