5.8G FPV Goggles + OSD Camera | HD Video Glasses for Racing Drone 25mW
②Key 2: Short press for Auto-Searching (Automatic selection of the strongest channel). ③Key 3: Short press for Band+ (Change bands A-B-E-F-R circularly). ④Key 4: Short press for Channel+ (Change channels 1-2-3-4-5-6-7-8 circularly).