Welcome To Our Store:Brand new and high qualityCovert acoustic tube earpiece for Ham RadioGreat for use in police， military， nightclubs， bars， paintball， security， restaurants， hotels， bouncer， warehouses， and noisy environments.Twin right angle: Ear 2.5mm stereo (top pin)， Mic 3.5mm stereo (bottom pin)Distance between two pin: 8mmClip on microphone combined with PTT (Push to Talk) buttonThe acoustic tube fits snugly to your ear canal and keeps your conversations privateHands free compatible with radios that are hands free capable