Price: Rear cameras generally add to the overall dash cam system cost. Potential Compatibility Issues: Although listed as compatible with specific models, slight variations or firmware versions could occasionally cause integration problems. Users should verify compatibility carefully before purchasing, especially if they have older units. Limited Features Compared to Standalone Rear Cameras: Being a camera designed specifically for integration, it might lack advanced features found in dedicated rear-view cameras (e.g., parking guidelines, wider viewing angles). Reliance on Rexing Ecosystem: Functionality is tied to the Rexing dash cam system; using it with other brands isn't possible. Image Quality - While acceptable for its purpose, image quality might not match higher-end standalone rear cameras, particularly in low light conditions (though this depends on lighting and resolution settings).