Retevis 2 Pin D Shape Earpiece Headset Mic PTT Walkie Talkie Earpiece Compatible Baofeng BF-888S UV-5R Retevis H-777 RT21 RT22 Walkie Talkies (1 Pack) D shape earpiece is comfortable hygienic and lightweight;Works on right or left ear Total length about 135 cm;Length from D-ring to PTT is 35 cm;Length from PTT to connector is 100 cm Microphone with in line push-to-talk (PTT) switch easy to use and communicate PU wire cable for greater durability and clearly transmit voice in extreme noise situations Simple and convenient return process; 60 days warranty provide by us and 30 days no reason to return