Review on 📷 4K 60fps 20MP Ultra HD WiFi Action Camera - Waterproof up to 131ft, with EIS, 2.4G Remote Control, 170° Wide Angle, 2 Batteries and Helmet Mounting Accessories Kits by Joshua Wheeler

Camera can only use FAT32 on microSD card. FAT32 has a limit of 4GB per file, which is 5 minutes per video at 4K 60fps. Its own documentation makes this very clear - there is a limit of 4GB per file due to the FAT32 limitation; After 5 minutes it stops writing to the file and starts writing to a new file, making an absolute mess in post-production. Unfortunately, the seller did not state this in any of the sales information on the Revain website.