Description: Almost All with a two pin plug, former pin diameter of 3.5 mm and 2.5 mm in diameter after pin, double pin from 8 mm within, 11 mm center distance of 2 pin. Microphone: Dimensions: Ø6*2.7mm Sensitivity: -38dB ± 3dB Frequency: 1kHz Impedance: 2.2KOhm Speaker: Diameter: Ø15mm Impedance: 110Ohm Sensitivity: 106dB ± 4dB Rated power: 0.5W Maximum power: 1W Compatibility: Kenwood: KPG27D, KPG29D, KPG48D, KPG49, KPG55D, KPG56D, KPG62D, KPG66D, KPG69D, KPG70D, KPG74D, KPG75D, KPG77D, KPG82D, KPG87D TH-F6 / F6A / D7 / D7A / D7AG / D7E / F /F7E/G71/G71A /G71E/ K2/ K2A /K2E/ K2ET / 21 / 21AT / 21BT / 22 / 22A / 22AT / 22E / 25 / 26/ 27/ 28/ 31AT / 31BT / 41AT / 41BT / 42 / 42A / 42AT / 2E / 45 / 46 / 47 / 215 / 225 / 235 / 235A / 235E / 315 / 41 TK-208 / 220/240/240D/248/250/260/260/270/370G/372G/373G/320/340/340D/348/350/378/378G/430/431/ 353/360/2100/2102/2130/2160/3100/3101/3102/3107/3118/ 3130/3131/ 3160 etc Retevis: H-777/RT7/RT-5R/RT-5RV/RT-B6/R888s plus HYT: TC286 / 386 / 2685 / 3865 / 6685 / TC 278 / 378 / 388 / TC2100 / 2088 BAODEENG: UV-5R Series / BF-480 / 490 / 320 / V6 / 520 / 530 / 999 / 888 / 777 / 666S / 777S / 888S Others WOUXUN / PUXING / QUANSHENG / LINTON / TYT etc. Package includes: 5 x Retevis earpiece Notice: If your radio model not listed above, please email us your model number, then, we will help you find one that suit for you