Retevis Two Way Radio Antenna SMA-F 136-174+400-480MHz Dual Band Antenna Compatible Baofeng UV-5R BF-888S Retevis H-777 RT-5R TYT 2 Way Radios(1 Pack) Connector SMA-F; Length Approx 4.13"-15.5"(10.5-39.5cm) Dual Frequency 144/430MHz(136-174+400-480MHz) Gain 2.15db/3.0db; extend the Range of your communication Extensible allow you can adjust the length depending on your needs Simple and Convenient return process; 60 days warranty provide by us and 30 days no reason to return