Retevis RHD-771 Elite Whip Antenna 15.4" SMA-F Dual Band 144/430 MHz for Retevis H-777 /RT-5R Baofeng UV5R/888S/Kenwood 2 Way Radio(1 Pack) SMA-F connector; Length Approx 39cm Dual Frequency136-174+400-480MHz and widely application field Gain 2.15db;Max power 20W and it can extend the range of your communication Use ABS material and Heat shrinkable sleeve and better than other general antenna Simple and convenient return process;45 days warranty and 30 days no reason to return