1. The antenna will allow you to get a longer range on a handheld radio 2. The antenna has a 2.15 signal and a power of 10W 3. Antenna type: expandable/stretchable 4. Frequency: 144 / 430MHz (136-174 + 400-480MHz) 5. Gain: 2.15db / 3.0db 6. V.S.W.R: less than 1.5 7. Impedance: 50ohm 8. Connector type: SMA-F female 9. Length: 10.5-39.5cm cm 10. Suitable for Kenwood TK-360, TK-370, TK-370G, TK-372, TK-372G, TK-3100, TK-3140, TK-3160, TK-3170, TK-3180, TK-3200, TK -3202,TK-3207; suitable for RETEVIS H-777, RT-5R, RT-B6, RT-5RV, 888s Plus, RT5; suitable for HYT TC-268, TC-268S, TC-368, TC-368S, TC-370S, TC-500-TC-500S; suitable for LINTON LT-3288, LT-6288, LT-3188, LT-2188, LT-3260, LT-3268, LT-6188; suitable for PUXING PX-777, PX-777Plus, PX-666, PX-888, PX-888K, etc.