This Lumenier Double AXII 2 HD 5.8GHz Long Range Right-Angle Antenna is designed for FPV flying. Whether you're a beginner or an experienced pilot, it's perfect for you. It has a unique combination of features like double the gain for longer range, high gain with omnidirectional reception, and improved characteristics over the standard AXII V1. Specifications include a Right-Angle RPSMA connector, an axial ratio of 1.0 (near perfect), a bandwidth of 5.3 - 6.2GHz, radiation efficiency of 98%, a semi-rigid RG402 cable, size of 190mm x 17.5mm, gain of 4.7dBiC, SWR <=1.5:1, weight of 17g, and Left Hand Circular (LHCP) polarization. It's specifically designed to work on DJI digital FPV goggles without an adapter. Comes with 1 antenna in the package.