The DJI Osmo Action Cold Shoe Expansion Kit is a special set of tools that helps you use your action camera in cool ways! It works with the DJI Osmo Action 5, 4, or 3 cameras. This kit has two parts: one part replaces the battery door and lets you add things like lights or microphones. The other part is a quick mount that you can easily attach to the camera. It also has soft padding to keep your camera safe. This way, you can make your videos even better.