Fixed with for goggles headband screw, and can be installed completely on the side of the for goggles. To fer video and audio signals to the screen for FPV goggles for viewing or recording. The compact and design is versatile and be enjoyed by people who have both analog and digital FPV flight equipment. Added a power switch and standard DVR interface. Easy to install. Model: 5.8G RX Port3.0 Power input: 2S-4S (DC5.5 x 2.1) Internal voltage: 5V 3A (with pad output) Power output: 2S-4S (DC5.5 x2.1) Signal Input: Standard Fat Receiver Port Including receivers: Reaxacc Furious, etc. Signal output: standard audio / video Support DVR Port Color: Black Material: ABS Package Contents: 1 set x for FPV video glasses Receiver module accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.