Retevis Walkie Talkie Antenna SMA-F Dual Band Antenna Compatible Baofeng UV-5R BF-888S Retevis H-777 RT21 Walkie Talkie (10 Pack) 10 pack walkie talkies antenna compatible with most brands two way radios; extend the distanceof reception and transmission SMA-F antenna for Retevis H-777 Baofeng Uv-5R radio; Length 8.46; Dual frequency;144/430MHz 136-174+400-470MHz This antenna features a 2.15dBi signal within 20W of power; boost the signal of your radio significantly Durable ABS Heat shrinkable sleeve material and whip antenna allows bend easily for long term use Simple and convenient return process; 60 days warranty and 30 days no reason to return